html, body {
    background: #eee;
    height: 100%;
    font-family: 'Trebuchet MS', sans-serif;
    color: #333;
    font-size: 16px;
}

a{
    color: #333;
}

.title {
    font-size: 20px;
}

body{
    display: flex;
    align-content: center;
    align-items: center;
    justify-content: center;
}

.bg{
    background-image: url(budokan.jpg);
    background-size: cover;
    background-position: center;
    position: fixed;
    left: 0;
    right: 0;
    top: 0;
    bottom: 0;
    opacity: .5;
}

.main {
    z-index: 10;
    background: rgba(255,255,255,.5);
    backdrop-filter: blur(5px);
    border-radius: 10px;
    text-align: center;
    padding: 40px 80px;
}

.btns {
    display: flex;
}
.btns .btn{
    border-bottom: 1px solid #333;
    padding: 5px;
    margin: 0 4px;
}

.btns a{
    text-decoration: none;
}

.h10 {
    height: 10px;
}

.small{
    font-size: 13px;
}