*{
    box-sizing: border-box;
    padding: 0;
    margin: 0;
}

body {
    background-color: aliceblue;

}

.caja1 {
    border: 2px black solid;
    background-color: rgb(255, 237, 74);
    height: 100px;
}
.caja2 {
    border: 2px black solid;
    background-color: rgb(255, 0, 242);
    height: 100px;
}
.caja3 {
    border: 2px black solid;
    background-color: rgb(255, 237, 74);
    height: 100px;
}
.caja4{
    border: 2px black solid;
    background-color: rgb(255, 0, 242);
    height: 100px;
}
.caja5 {
    border: 2px black solid;
    background-color: rgb(255, 237, 74);
    height: 100px;
}
.caja6{
    border: 2px black solid;
    background-color: rgb(255, 0, 242);
    height: 100px;
}
.caja7 {
    border: 2px black solid;
    background-color: rgb(255, 237, 74);
    height: 100px;
}
.caja8{
    border: 2px black solid;
    background-color: rgb(255, 0, 242);
    height: 100px;
}
.caja9 {
    border: 2px black solid;
    background-color: rgb(255, 237, 74);
    height: 100px;
}
.caja10 {
    border: 2px black solid;
    background-color: rgb(255, 0, 242);
    height: 100px;
}