style.css

@import url('https://fonts.googleapis.com/css2?family=Sriracha&display=swap');

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

.container {
    max-width: 80%;
    /* background-color: rgb(223, 117, 223); */
    padding: 34px;
    margin: auto;
}

h1 {
    font-family: 'Sriracha', cursive;
    text-align: center;
    font-size: 40px;
}

p {
    font-size: 20px;
    text-align: center;
}

input, textarea {
    border: 1px solid black;
    border-radius: 6px;
    outline: none;
    width: 80%;
    margin: 11px 0;
    padding: 7px;
    font-size: 16px;
}

form {
    display: flex;
    align-items: center;
    justify-content: center;
    flex-direction: column;
}

.btn {
    color: white;
    background-color: purple;
    padding: 8px 12px;
    font-size: 20px;
    border: 2px solid white;
    border-radius: 14px;
    cursor: pointer;
}

.bg {
    width: 100%;
    position: absolute;
    z-index: -1;
    opacity: 0.8;
}

.msg {
    font-size: 25px;
    color: rgb(25, 25, 87);
    font-weight: 600;
    margin: 20px 0 5px;
}