flex.styles.css

html, body {
    padding: 0;
    margin: 0;
  }

input{
  font-size: 14px;
  font-family: Arial, Helvetica, sans-serif
}

body{
  background-color: #BBB;
  font-family: Arial, Helvetica, sans-serif
  padding-bottom 100px;
}

h2, h3 {
  margin: 0 0 .75em 0;
}

/* first example */
.container{
  max-width: 750px;
  margin:20px auto 0 auto;
  padding: 30px;
  background-color: #FFF;

}

.form-row{
  padding: 10px 0;
  display :flex;
}

.form-row label{
  padding-right: 10px;

}

.form-row input{

  padding-left: 10px;
  flex:1;
}

/* second example */
.column-layout{
  max-width: 1300px;
  background-color: #FFF;
  margin:40px auto 0 auto;
  line-height: 1.65;
  padding: 20px 50px;
  display: flex;
}

.main-column
{
  flex:3;
  order:2;
}

.sidebar-one{
  flex:1;
  order:1;
}

.sidebar-two{
  flex:1;
  order:3;
}

/* third example */
.call-outs-container{
  max-width: 1400px;
  margin:40px auto 0 auto;

}

.call-out {
  padding:20px;
  margin-bottom : 20px;
  box-sizing: border-box;
  flex-basis:30%
}
@media (min-width : 900px) {
  .call-outs-container{
    display: flex;
    justify-content: space-between;
  }
}


.call-out:nth-child(1) {
   background-color: #c0dbe2;
}
.call-out:nth-child(2){
  background-color: #cdf1c3;
}
.call-out:nth-child(3){
  background-color:#ccb9da;
}

/* fourth example */
.fixed-size-container{
  max-width: 1400px;
  margin:40px auto 0 auto;
  background-color: #FFF;
  padding: 30px 0;
  display :flex;
  align-items: center;
  justify-content: space-around;
  flex-wrap: wrap;  /* gracefully dropdown to multiple rows when it needs to */
 
}

.fixed-size{
  width: 150px;
  height: 100px;
  background-color: #990b47;
  color:#FFF;
  line-height: 100px;
  text-align: center;
  font-weight: bold;
  font-size:60px;
  margin-bottom: 20px;
}

/* fifth example - centre the text vertically and horizontally*/
.banner {
  height: 400px;
  max-width: 700px;
  margin: 40px auto 40px auto;
  background-color: #2a2a2a;
  display: flex;
}

.center-me{
  color:#FFF;
  font-size: 50px;
  margin:auto;
}

/* sixth example  - column layouts*/
.equal-height-container {
  max-width: 900px;
  margin: 0 auto;
  display: flex;
}

.first {
  background-color: #FFF;
  padding: 20px;
  flex: 1;
}

.second {
  background-color: yellow;
  flex: 1;
  display: flex;
  flex-direction: column; /* Default is row - Change to column for vertical space*/
}

.second-a {
  background-color: #c0dbe2;
  flex: 1;
}

.second-b {
  background-color: #cdf1c3;
  flex: 1;
}