style.css

html body {
    background-color: #92D293;
}

p {
    margin-top: 25px;
    padding-left: 15px;
    padding-right: 10px;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    font-size: large;
    font-weight: bolder;
    color: #2E2E2E;
}

.container{
    position: fixed;
    top: 50%;
    left: 50%;
    width: 350px;
    height: 350px;
    transform: translate(-50%, -50%);
    background-color: coral;
    border-radius: 10px;
}

input {
    width: 310px;
    float: right;
    margin: 8px;
    line-height: 20px;
}

button {
    margin-left: 130px;
    padding: 2px;
    margin-top: 5px;
    width: 80px;
    background-color: #0679c1;
    border: none;
    font-size: medium;
    font-weight: 600;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    color: cornsilk;
    border-radius: 5px;
}