styleish.css

@import url("https://fonts.googleapis.com/css?family=Raleway:900&display=swap");

body {
    font-family: Arial, sans-serif;
    overflow-x: hidden;
    margin: 0;
    padding: 0;
    background: #1a1a1a

}

h1 {
    font-weight: bold;
    font-size: 80px;
    color: #ffff;
    margin: 0;
}

/* Forum */
input[type=text],
select,
textarea {
    color: #000000;
    width: 100%;
    padding: 12px;
    border: 1px solid #ffffff00;
    border-radius: 4px;
    box-sizing: border-box;
    margin-top: 6px;
    margin-bottom: 16px;
    resize: vertical;
}

input[type=submit] {
    background-color: #507052;
    color: white;
    padding: 12px 20px;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    transition: all 1s;
}

input[type=submit]:hover {
    background-color: #3f5a41;
}

.containerForum {
    top: 20%;
    z-index: -1;
    position: absolute;
    border-radius: 5px;
    background-color: #cfcbcb00;
    width: 75%;
    padding: 20px 190px;
}