*{
    box-sizing: border-box;
}
body{
    margin: 0;
    background-color: lightgray;
    line-height: 1.4;
}
h1{
    text-align: center;
}
a{
    text-decoration: none;
    color: black;
}
.container{
    max-width: 960px;
    margin: 0 auto;
    outline: 3px dotted lightpink;
}
.row{
    display: flex;
    -display: inline-flex;
}
.flex-item{
    -min-width: 200px;
    width: 320px;
    height: 150px;
    flex-grow: 1;
}
.one{
    background-color:lightblue;
    flex-grow: 1;
    -flex-shrink: 1;
}
.two{
    background-color: rgb(124, 189, 211);
    flex-grow: 4;
    -flex-shrink: 2;
}
.three{
    background-color: rgb(94, 175, 202);
    flex-grow: 1;
    -flex-shrink: 3;
}
.one1{
    background-color:rgb(200, 108, 243);
    -flex-grow: 1;
    flex-shrink: 1;
}
.two2{
    background-color: rgb(240, 83, 229);
    -flex-grow: 4;
    flex-shrink: 2;
}
.three3{
    background-color: rgb(233, 30, 114);
    -flex-grow: 1;
    flex-shrink: 3;
}