*{
    box-sizing: border-box;
}
body{
    background-color: antiquewhite;
    font-family: Arial, Helvetica, sans-serif;
    -outline: dotted red;
}
.content{
    background-color: orange;
    width: 300px;
    height: 150px;
    padding: 10px;
    margin: 5px;
    border: 2px solid black;
    display: block;
}
.padding{
    background-color: coral;
    width: 300px;
    height: 150px;
    padding: 30px;
    margin: 5px;
    border: 2px solid lightblue;
    display: block;
}
.border{
    background-color: tomato;
    width: 300px;
    height: 150px;
    padding: 10px;
    margin: 5px;
    border: 10px solid greenyellow;
    display: inline-block;
}
.margin{
    background-color: lightpink;
    width: 300px;
    height: 150px;
    padding: 10px;
    margin: 30px;
    border: 10px solid rgb(82, 100, 201);
    display: inline-block;
}
.vsblt{
    background-color: darkorchid;
    width: 300px;
    height: 150px;
    padding: 10px;
    margin: 10px;
    border: 10px solid rgb(82, 201, 175);
    display: inline;
}