body{
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}
 
.header{
    height:50px;
    text-align: left;
    background-color: #888;
    color: #fff;
    padding-left: 20px
}
 
.content{
    flex: 1;
    background-color: #cce;
    text-align: left;
    margin-top: 5px;
    padding-left: 20px
}