html{background-color:green;}
/*{box-sizing;border-box;}*/
h1{border-style:solid;
    border-color:black;
    background-color:white;
    text-align:center;
}
    div {float:left;}
div#left{ height: 1000px;
    width : 18%;
    border-style: solid;
    border-color:red;
    background-color:skyblue;
    float:left;}
div#left2{ height: 1000px;
    width : 18%;
    border-style: solid;
    border-color:red;
    background-color:orangered;
    margin-left:5px;
}
div#middle{ height: 1000px;
    width : 18%;
    border-style: solid;
    border-color:red;
    background-color:white;
    margin-left: 5px;
    
}
div#right{ height: 1000px;
    width : 18%;
    border-style: solid;
    border-color:red;
    background-color: brown;
    margin-left:5px;
}
div#right2{ height: 1000px;
    width : 18%;
    border-style: solid;
    border-color:red;
    background-color:yellowgreen;
    margin-left: 5px;
}
footer{background-color:white;
        text-align:center;
        font-family:"cursive";
        font-size: 32px;
        color:blue;
        }
.clear{clear:both;}
.clear::after{content: " ";
              clear:both;
              display:table;}