@charset "utf-8";
*{margin: 0; padding: 0; box-sizing: border-box;}
body {
    font-family: sans-serif;
}

main {
    width: calc(100% - 16px);
    max-width: 400px;
    margin: 0 auto;
}
h1 {
    position: relative;
    font-family: serif;
    margin: 16px 0;
    font-size: 22px;
    text-align: center;
    letter-spacing: 2px;
    color: #fff;
    text-shadow: 1px 1px 2px rgba(0, 0, 0, 1);
    padding: 6px 0;
    border-top: 4px solid #d8dcdc;
    border-right: 4px solid #666;
    border-bottom: 4px solid #333;
    border-left: 4px solid #868888;
    border-radius: 0;
    background-image: -webkit-linear-gradient(135deg, #ccc 0%, #868888 20%, #d8dcdc 34%, white 53%, #ccc 100%);
}
h1 a {
    position: absolute;
    right: 8px;
    text-decoration: none;
    font-size: 22px;
    color: white;
    text-shadow:
        0 0 8px  mediumspringgreen,
        0 0 16px white;
}
.menu {
    cursor: pointer;
    position: absolute;
    content: '';
    right: 5px;
    text-shadow: 0 0 8px #fff, 0 0 16px #fff, 0 0 24px #fff,0 0 30px #fff;
}
h2 {
    letter-spacing: 2px;
    text-align: center;
    margin-bottom: 16px;
    text-shadow:
    1px 1px 2px black,
    0 0 1em blue,
    0 0 0.2em blue;
    color: white;
    font:1.4em Georgia,serif;
}
input, select {
    border: 1px solid #333;
    border-radius: 0;
    font-size: 16px;
    height: 26px; line-height: 26px;
    padding: 0 4px;
}
input[type=submit] {
    background: #555;
    color: #fff;
    padding: 0 8px;
}
.register_form {
    margin-bottom: 32px;
}
.register_form > div {
    margin-bottom: 3px;
    display: flex;
    gap: 3px;
}
input[name="hdn"] {
    width: 0;
    flex: 1;
}
input[name="pas"] {
    width: 0;
    flex: 1;
}
.participant {
    display: flex;
    gap: 3px;
}
input[name="add_hdn"] {
    width: 0;
    flex: 1;
}
input[name="add_pas"] {
    width: 0;
    flex: 1;
}

section {
    position: relative;
    background: #fff;
    border: 1px solid #333;
    border-radius: 3px;
    padding: 3px;
    margin-bottom: 24px;
}
section::before {
    position: absolute;
    content: '';
    top: -10px;
    left: 50%;
    transform: translateX(-50%);
    border-width: 0 10px 10px 10px;
    border-color: transparent transparent #333 transparent;
    border-style: solid;
}
section::after {
    position: absolute;
    content: '';
    top: -8.7px;
    left: 50%;
    transform: translateX(-50%);
    border-width: 0 10px 10px 10px;
    border-color: transparent transparent #fff transparent;
    border-style: solid;
}
.x_btn {
    padding: 4px 0;
    display: flex;
    justify-content: center;
    align-items: center;
    border-bottom: 1px solid #333;
    margin-bottom: 8px;
    gap: 4px;
    cursor: pointer;
}
.x_btn.under {
    justify-content: left;
    border: none;
    padding: 0 0 0 5px;
    margin: 0 0 8px 0;
}
.fa-rectangle-xmark {
    color: #555;
    font-size: 24px;
    vertical-align: middle;
}
.participant {
    margin-top: 8px;
}
.ip {
    color: #999;
    font-size: 13px;
}