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

body {
    font-family: Arial, Helvetica, sans-serif;
    background-color: rgba(0, 255, 34, 0.253);
}

.caja1 {
    background-color: rgb(9, 255, 0) ;
    border: 2px solid black;
    height: 200px;
}

.caja2 {
    background-color: rgb(0, 195, 255) ;
    border: 2px solid black;
    height: 200px;
}

.caja3 {
    background-color: rgb(9, 255, 0) ;
    border: 2px solid black;
    height: 200px;
}

.caja4 {
    background-color: rgb(0, 195, 255) ;
    border: 2px solid black;
    height: 200px;
}

.caja5 {
    background-color: rgb(9, 255, 0) ;
    border: 2px solid black;
    height: 200px;
}

.caja6 {
    background-color: rgb(0, 195, 255) ;
    border: 2px solid black;
    height: 200px;
}

.caja7 {
    background-color: rgb(9, 255, 0) ;
    border: 2px solid black;
    height: 200px;
}
.caja8 { 
    background-color: rgb(0, 195, 255) ;
    border: 2px solid black;
    height: 200px;
}

.caja9 {
    background-color: rgb(9, 255, 0) ;
    border: 2px solid black;
    height: 200px;
}

.caja10 {
    background-color: rgb(0, 195, 255) ;
    border: 2px solid black;
    height: 200px;
}