layout.css

*{
    margin-top:20px;
    margin-left: 0;
    margin-right: 0;
    padding: 0;
  }
  .one{
    background-color: gray;
    width:100%;
    padding-top: 20px;
    padding-bottom: 20px;
    display: flex;
    justify-content: space-evenly;
  
  }
  .three{
    width: 15%;
    height: 200px;
    background-color: red;
  }
  .two{
    background-color: black;
    width: 100%;
    padding-top: 20px;
    padding-bottom: 20px;
  }
  .four{
    background-color: grey;
    width: 20%;
    height: 200px;
    display: inline-block;
    margin-left: 4%;
  }



/* * {
    margin: 0px;
    padding: 0px;
}

.one {
    height : 300px;
    width : 300px;
    background-color : red;
    padding: 50px;
    border: 20px solid black;
    margin: 50px;
    box-sizing: border-box;
    display: inline-block;

}

/* BORDER BOX HELPS TO USE THE SIZE OF HEIGHT AND WIDTH GIVEN FOR A BOX */

/* .two {
    height: 100px;
    width: 100px;
    background-color: blue;
    display: inline-block;
}

.parent {
    /* height: 300px; */
    /* width: 100%;
    background-color: grey;
}

.ele {
    height: 200px;
    width: 50%;
    background-color: red;
} */