body{
    margin: 0;
}

.block_2{
    
    position: absolute;
    left: 300px;
    width: 100%;
    height: 100%;
    background-color: BLUE;
    
}

.block_1{
    position: absolute;
    left: 0px ;
    width: 300px;
    height: 100% ;
    background-color: RED;
}
.titre{
    text-align: center;
    
}
.test{
    position: absolute;
    bottom: 5%;
    left: 30%;

    text-align : center;
    
}