body {
    margin: 0;
}


.container{
    padding: 100px;
}

.block1{
background-color: yellow;

float: left;
width : 25%;
}

.block2{
    background-color: purple;

    float : right;
 
    width: 30%;
   
}

.block3{
    background-color: green;
    float: right;
    width: 25%;
    }

.block{
    box-sizing: border-box;
    float : left;
    height: 50px;
    

}
.b-1{
    width: 20%;
    background-color: mediumblue;
   
}
#b-2{
    width: 60%;
    padding-left: 10px;
    padding-right: 10px;
    background-color: maroon;

}


.box{
    box-sizing: border-box;
    float: left;
    height: 50px;
    width: 50px;
    background-color: mediumslateblue;
    margin-top : 10px;
    margin-left: 0px;
    margin-right: 10px;
    border-radius: 10%;
    
}

.enter{
    float: left;
    width: 100%;
    clear: both;
    margin-top:  10px;
}

.clear{
    clear: both;
}

.line{
    display: flex;

}
.green{
    background-color: green;
}
.red{
    background-color:red ;
}

.bleu{
    background-color:royalblue;
}

.size{
    box-sizing: border-box;
    border-radius: 10%;
    height: 50px;
    width: 50px;
    margin-top: 10px;
    margin-right: 10px;
}

.big-bloc{
    box-sizing: border-box;
    border-radius: 10%;
    width: 15%;
    height: 50px;
    margin-top: 10px;
    margin-bottom: 10px;
}