.back-head{
  display: table-cell;
  width: 100vh;
  height: 44px;
  /* background-color: #ffa200; */
  padding: 0 15px;
  vertical-align: middle;
}
.back-head img{
  display: block;
  width: 2em;
  height: 2em;
  line-height: 44px;
  
  float: left;
}

.content{
  padding: 15px;
}

h1{
  font-size: 1.5em;
  text-align: center;
  margin-bottom: 5px;
}
h4{
  line-height: 2em;
}