:root {
    --white: #fff;
    --primary-color: #9c27b0;
    --light-primary-color: #e1bee7;
    --dark-primary-color: #7b1fa2;
    --accent-color: #ff5252;
    --primary-text: #212121;
    --diveder-color: #bdbdbd;
}
html,
body {
    margin: 0;
    padding: 0;
    background-attachment: fixed;
    background-position: 50% 50%;
    background-size: cover;
}
a {
    text-decoration: underline;
}
a:hover {
    text-decoration: none;
}
body {
    background-color: var(--primary-color);
    max-width: 600px;
    margin: 0 auto;
    padding: 40px;
}
@media screen and (max-width: 600px) {
    .body {
        padding: 20px;
    }
}
.text-center {
    text-align: center;
}
main {
    margin: 0;
    outline: none;
    box-shadow: 0 0 20px rgba(64, 64, 64, 0.3);
    font: 13px/1.55 "Open Sans", Helvetica, Arial, sans-serif;
    color: var(--primary-text);
}
main * {
    margin: 0;
    padding: 0;
}
main header {
    display: block;
    padding: 20px 30px;
    border-bottom: 1px solid rgba(0, 0, 0, 0.1);
    background: rgba(248, 248, 248, 0.9);
    font-size: 18px;
    font-weight: 300;
    color: var(--primary-text);
    position: relative;
}
main section {
    display: block;
    padding: 25px 30px 5px;
    border: none;
    background: var(--white);
}
main div {
    margin-bottom: 20px;
}
main a {
    color: var(--primary-color);
}
main .label {
    display: block;
    margin-bottom: 6px;
    line-height: 19px;
}
main .input, main .textarea, main .button {
    position: relative;
    display: block;
}
main .input input, main .textarea textarea {
    display: block;
    box-sizing: border-box;
    -moz-box-sizing: border-box;
    width: 100%;
    height: 39px;
    padding: 8px 10px;
    outline: none;
    border-width: 2px;
    border-style: solid;
    border-radius: 0;
    background: var(--white);
    font: 15px/19px "Open Sans", Helvetica, Arial, sans-serif;
    color: var(--primary-text);
    appearance: normal;
    -moz-appearance: none;
    -webkit-appearance: none;
}
main .textarea textarea {
    height: auto;
    resize: none;
}
main .textarea-resizable textarea {
    resize: vertical;
}
main .button {
    float: right;
    height: 39px;
    overflow: hidden;
    margin: 10px 0 0 20px;
    padding: 0 25px;
    outline: none;
    border: 0;
    font: 300 15px/39px "Open Sans", Helvetica, Arial, sans-serif;
    text-decoration: none;
    color: var(--white);
    cursor: pointer;
}
main .input input, main .textarea textarea {
    border-color: var(--diveder-color);
    transition: border-color 0.3s;
}
main .button {
    background-color: var(--accent-color);
    opacity: 0.8;
    transition: opacity 0.2s;
}
main .button:hover {
    opacity: 1;
}
main .input:hover input, main .textarea:hover textarea {
    border-color: var(--light-primary-color);
}
main .input input:focus, main .textarea textarea:focus {
    border-color: var(--dark-primary-color) !important;
}
main .button.middle {
    display: block;
    width: 38%;
    margin: 0 auto;
    float: none;
}