twitter.css

* {
  margin: 0;
  padding: 0;

  /* BOX-SIZING:border-box faz o padding dos elementos de forma interna
      ou seja, não aumenta o espaço ocupado, mas sim, retira da dimensão
      do elemento o valor do padding.
  */
  box-sizing: border-box;
}

html,
body {
  background: #e6ecf0;
  font-family: "Helvetica Neue", "Helvetica", Arial, sans-serif;
  text-rendering: optimizeLegibility !important;
  -webkit-font-smothing: antialiased !important;
}

img {
  height: 20px;
  width: 20px;
}

input,
button {
  outline: 0;
}

.content {
  max-width: 1170px;
  margin: 0 auto;
  padding: 0 30px;
}

header#main-header {
  height: 46px;
  background: #fff;

  box-shadow: 0 1px 1px rgba(0, 0, 0, 0.25);

  /* Para a sombra do header 
  ficar na camada superior, 
  não ficar abaixo do Banner*/
  position: relative;
  z-index: 1;
  /*===================*/
}

header#main-header .content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

/*
header#main-header img {
  height: 20px;
  width: 20px;
}
*/

header#main-header nav ul {
  display: flex;
  list-style: none;
}

header#main-header nav ul li {
  font-size: 13px;
  font-weight: bold;
  color: #667580;

  display: flex;
  align-items: center;

  margin-left: 30px;
}

header#main-header nav ul li:first-child {
  margin-left: 0px;
}

header#main-header nav ul li img {
  margin-right: 7px;
}

header#main-header div.search-group {
  display: flex;
}

header#main-header div.search-group input {
  width: 220px;
  height: 34px;
  padding: 0 30px 0 12px;
  font-size: 12px;

  border: 1px solid #e6ecf0;
  border-radius: 16px;
  color: #667581;

  background: #f5f8fa url("/images/search.svg") no-repeat 190px center;
}

header#main-header div.search-group img {
  height: 34px;
  width: 35px;
  border-radius: 50%;

  margin: 0 15px;
}

header#main-header div.search-group button {
  height: 34px;
  background: #3bb9e3;

  display: flex;
  align-items: center;
  justify-content: center;

  width: 90px;
  font-weight: bold;
  font-size: 14px;
  color: #fff;
  border: none;
  border-radius: 16px;
}

div.banner {
  height: 380px;
  width: 100%;
  background: #3bb9e3;

  display: flex;
  align-items: center;
  justify-content: center;

  color: rgba(255, 255, 255, 0.5);
}

div.horizontal-bar {
  height: 59px;
  background: #fff;

  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.25);
}

div.horizontal-bar .content {
  display: flex;
  justify-content: space-between;
  align-items: center;

  padding-left: 285px;

  height: 100%;
}

div.horizontal-bar .content ul {
  display: flex;

  list-style: none;

  height: 100%;
}

div.horizontal-bar .content ul li {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;

  padding: 0 15px;
  position: relative;
}

div.horizontal-bar .content ul li.active::after {
  content: "";
  width: 100%;
  height: 3px;
  position: absolute;
  bottom: 0;
  left: 0;
  background: #3bb9e3;
}

div.horizontal-bar .content ul li span {
  color: #667580;
  font-size: 12px;
  font-weight: bold;
}

div.horizontal-bar .content ul li strong {
  color: #667580;
  font-size: 18px;
  font-weight: bold;
  margin-top: 2px;
}

div.horizontal-bar .content ul li.active strong {
  color: #3bb9e3;
}

div.horizontal-bar .content .actions {
  display: flex;

  align-items: center;
  justify-content: center;
}

div.horizontal-bar .content .actions button {
  background: #fff;

  height: 34px;
  width: 90px;

  display: flex;
  align-items: center;
  justify-content: center;

  font-weight: bold;
  font-size: 14px;
  color: #3bb9e3;
  border: 1px solid #3bb9e3;
  border-radius: 16px;

  margin-right: 20px;
}

div.wrapper-content {
  display: flex;
}

div.wrapper-content aside.profile {
  width: 260px;
}

div.wrapper-content aside.profile img.avatar {
  width: 200px;
  height: 200px;
  border-radius: 50%;
  border: 5px solid #fff;
  margin-top: -130px;
}

div.wrapper-content aside.profile h1 {
  font-size: 21px;
  color: #1f2226;
  margin-top: 10px;
}

div.wrapper-content aside.profile span {
  font-size: 14px;
  color: #53626c;
}

div.wrapper-content aside.profile p {
  font-size: 14px;
  color: #1f2226;
  margin-top: 15px;
}

div.wrapper-content aside.profile ul.profile-list {
  margin-top: 20px;
  list-style: none;
}

div.wrapper-content aside.profile ul.profile-list li {
  font-size: 14px;
  color: #657786;

  display: flex;
  align-items: center;

  margin-top: 5px;
}

div.wrapper-content aside.profile ul.profile-list li:first-child {
  margin: 0;
}

div.wrapper-content aside.profile ul.profile-list li img {
  margin-right: 10px;
}

div.wrapper-content aside.profile .widget {
  margin-top: 20px;
}

div.wrapper-content aside.profile .widget strong {
  font-weight: normal;
  color: #3bb9e3;
  font-size: 14px;

  display: flex;
  align-items: center;
}

div.wrapper-content aside.profile .widget img {
  margin-right: 5px;
}

div.wrapper-content aside.profile .followers ul {
  list-style: none;

  display: flex;
  flex-wrap: wrap;
}

div.wrapper-contentaside aside.profile .followers ul li:first {
  margin-top: 10px;
}

div.wrapper-content aside.profile .followers ul li {
  width: 45px;
  height: 45px;

  background: #d0d5d9;
  border-radius: 50%;

  flex-shrink: 0;

  margin: 5px 5px 0 0;

  flex-grow: 1;
}

div.wrapper-content aside.profile .images ul {
  list-style: none;

  display: flex;
  flex-wrap: wrap;
}

div.wrapper-content aside.profile .images ul li:first {
  margin-top: 10px;
}

div.wrapper-content aside.profile .images ul li {
  width: 78px;
  height: 78px;

  background: #d0d5d9;
  border-radius: 8px;

  flex-shrink: 0;

  margin: 5px 5px 0 0;

  flex-grow: 1;

  /* Podemos juntar as propriedades 
      FLEX-GROW e FLEX-SHRINK
      na propriedade FLEX
      >> The flex CSS property sets how a flex item will grow or shrink
      >> to fit the space available in its flex container. 
      >> It is a shorthand for flex-grow, flex-shrink, and flex-basis.
      o que seria, neste caso:
      FLEX: 1 0 auto;
  */
}

div.wrapper-content .timeline {
  flex-grow: 1;
  background: #fff;
  margin: 10px 20px 0;
}

div.wrapper-content .timeline nav {
  border-bottom: 1px solid #e6ecf0;
  padding: 10px 15px;
}

div.wrapper-content .timeline nav a:first-child {
  margin: 0;
}

div.wrapper-content .timeline nav a {
  margin-left: 20px;
  text-decoration: none;
  color: #3bb9e3;
  font-size: 18px;
  font-weight: bold;
}

div.wrapper-content .timeline nav a.active {
  color: #1f2226;
}

div.wrapper-content .timeline ul.tweets {
  list-style: none;
}

div.wrapper-content .timeline ul.tweets li {
  border-bottom: 1px solid #e6ecf0;
  padding: 10px 15px;

  display: flex;
}

div.wrapper-content .timeline ul.tweets li img.tweet{
  width: 48px;
  height: 48px;
  border-radius: 50%;
}

div.wrapper-content .timeline ul.tweets li .info {
margin-left: 10px;

display: flex;
flex-direction: column;
}

div.wrapper-content .timeline ul.tweets li .info strong{
  font-size: 14px;
  color: #1f2326;
}

div.wrapper-content .timeline ul.tweets li .info strong span { 
  font-weight: normal;
  font-size: 13px;
  color: #7b8b9a;
}

div.wrapper-content .timeline ul.tweets li .info p { 
  font-size: 14px; 
  color: #1f2326;
  margin-top: 5px;
}

div.wrapper-content .timeline ul.tweets li .actions { 
  display: flex;
  margin-top: 15px;
}

div.wrapper-content .timeline ul.tweets li .actions a:first-child { 
  margin-left: 0;
}

div.wrapper-content .timeline ul.tweets li .actions a { 
  display: flex;
  align-items: center;
  text-decoration: none;
  color: #667580;
  font-weight: bold;
  font-size: 12px;
  margin-left: 30px;
}

div.wrapper-content .timeline ul.tweets li .actions a img { 
margin-right: 5px;
}


div.wrapper-content aside.widgets {
  width: 290px;
  margin-top: 10px;
}

div.wrapper-content aside.widgets .widget {
  background: #fff;
  padding: 15px;
}

div.wrapper-content aside.widgets .title {
  display: flex;
  align-items: baseline;
}

div.wrapper-content aside.widgets .title strong {
  font-size: 18px;
  color: #1f2226;
}
div.wrapper-content aside.widgets .title a::before {
  content: "";
  width: 2px;
  height: 2px;

  border-radius: 50%;
  background: #222;
  margin-left: 5px;
  margin-right: 5px;
  position: absolute;
  left: 1px;
  top: 6px;
}

div.wrapper-content aside.widgets .title a {
  color: #3bb9e3;
  font-size: 12px;

  text-decoration: none;
  position: relative;

  padding-left: 10px;
}

div.wrapper-content aside.widgets ul {
  list-style: none;
  margin-top: 10px;
}

div.wrapper-content aside.widgets ul li {
  display: flex;
  justify-content: space-between;

  margin-bottom: 10px;
  padding-bottom: 10px;
  border-bottom: 1px solid #ccd6dd;
}

div.wrapper-content aside.widgets ul li:last-child {
  margin-bottom: 0;
  padding-bottom: 0;
  border: 0;
}

div.wrapper-content aside.widgets ul li .follow-profile {
  display: flex;
  align-items: center;
}

div.wrapper-content aside.widgets ul li .follow-profile img {
  width: 48px;
  height: 48px;

  border-radius: 50%;

  margin-right: 10px;
}

div.wrapper-content aside.widgets ul li .follow-info {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  justify-content: center;

  margin-left: 5px;
}

div.wrapper-content aside.widgets ul li .follow-info strong {
  font-size: 14px;
  color: #1f2326;
}

div.wrapper-content aside.widgets ul li .follow-info strong span {
  font-weight: normal;
  color: #9a9a9a;
}

div.wrapper-content aside.widgets ul li .follow-info button {
  background: #fff;

  height: 27px;
  width: 90px;

  display: flex;
  align-items: center;
  justify-content: center;

  font-weight: bold;
  font-size: 14px;
  color: #3bb9e3;
  border: 1px solid #3bb9e3;
  border-radius: 16px;

  margin-top: 4px;
  margin-right: 20px;
}

div.wrapper-content aside.widgets ul li > a {
  font-size: small;
  color: #ccd6dd;
  text-decoration: none;
}