style.css

html,body{
    min-height : 100%;
}
body{
    margin: 0;
    background-image:
            linear-gradient(to bottom ,skyblue,white);
}
#container{
    width : 60%;
    min-height: 400px;
    margin: 0 auto;
    margin-top: 50px;
    background-color: #FFFFFF;
    border-radius: 10px;
    box-shadow: 0px 0px 10px black;
}
#one{
    background-color: #FBFBFF;
    position: relative;
    border-bottom: 1px solid #c0c9d1;
    border-top-left-radius: 10px;
    border-top-right-radius: 10px;
}

#one h1{
    text-align: center;
    color: orange;

    font-family: Helvetica;
    padding-top: 20px;
    font-style: oblique;

}
form{
    text-align: center;
    margin-bottom: 30px;
}
input[type=text]{
    width:70%;
    margin: 50px;
    margin-top: 40px;
    padding: 3px 50px;
    border: 1px solid #dCdCdf;
    background-color: #ECECEF;
    font-size: 20px;
    text-align: center;
}
button{
    border: 0;
    border-radius: 35px/35px;
    background-color: deepskyblue;
    color: white;
    font-family: Sans;
    font-size: 22px;
    padding: 12px;
    position: absolute;
    top: 108px;
    right: 50px;
    cursor :pointer;
}
button:hover{
    background-color: dodgerblue;
}

p{
    font-size: 22px;
    color: orangered;
    margin-left: 50px;
}