style.css

body{
    margin: 0;
    height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    background-color: hsl(0, 0%, 95%);
}
.container{
    background-color: hsl(0, 0%, 95%);
    width: 800px;
    height: 400px;
    display: flex;
    flex-direction: row;
    justify-content: stretch;
    align-items: stretch;
    border-radius: 10px;

}
.cc{
    float: left;
  width: 33.33%;
}
#d1{
    background-color:hsl(31, 77%, 52%) ;
    border-top-left-radius: 10px;
    border-bottom-left-radius: 10px;
    
}
.btn1{
    color: hsl(31, 77%, 52%) ;
}
#d2{
    background-color:hsl(184, 100%, 22%) ;
}
.btn2{
    color:hsl(184, 100%, 22%) ;
}
#d3{
    background-color: hsl(179, 100%, 13%);
    border-bottom-right-radius:10px ;
    border-top-right-radius:10px ;
}
.btn3{
    color:hsl(179, 100%, 13%) ;
}

img{
    margin-left: 30px;
    margin-top: 30px;
}
p{
    color: hsla(0, 0%, 100%, 0.75);
    margin-left: 27px;
    margin-right: 20px;
    font-family: 'Lexend Deca', sans-serif;
    font-weight: 400;
    font-size: 15px;
    margin-bottom: 30px;
    

}
h1{
    color: hsla(0, 0%, 100%, 0.75);
    margin-left: 27px;
    font-family: 'Big Shoulders Display', cursive;
    font-weight:700 ;

 
}
button {
    -webkit-border-radius: 30;
    -moz-border-radius: 30;
    border-radius: 30px;
    font-family: Arial;
    font-size: 15px;
    background: hsla(0, 0%, 100%, 0.75) ;
    padding: 10px 20px 10px 20px;
    text-decoration: none;
    border: 0px;
    margin-top: 30px;
    margin-left: 27px;
  }