#wrapper {
    background-color: rgba(26, 26, 26, 0.5);
    margin: 0 auto;
    width: 35%;
    color: #d9d9d9;
    box-shadow: 0 0 10px rgba(0,0,0,0.25);
    padding-bottom: 30px;
    min-width: 300px;
}
body {
    background-image: linear-gradient(rgba(26, 26, 26, 0.85), rgba(26, 26, 26, 0.98)), url('bg.webp');
    background-repeat: no-repeat;
    background-size: 100% 100%, auto;
    background-position: center;
    color: #d9d9d9;
    font-family: "Helvetica Neue", "Helvetica", "Hiragino Sans", "Hiragino Kaku Gothic ProN", "Arial", "Yu Gothic", "Meiryo", sans-serif;
    height: 100%;
    margin: 0;
    background-attachment: fixed;
}
h1, h2, h3 {
    text-align: center;
}
#portfolio {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
}
.video {
    margin: 10px;
}
#contact {
    text-align: center;
}
#contact img {
    border-radius: 50%;
    margin-bottom: 20px;
}
a {
    color: #33cc99;
    text-decoration: none;
}
a:hover {
    color: #009999;
}
footer {
    text-align: center;
    background: linear-gradient(rgba(26, 26, 26, 0.9), rgba(26, 26, 26, 0.9));
    color: #d9d9d9;
}
.button {
 --color: #33cc99;
 background-color: transparent;
 border-radius: .3em;
 position: relative;
 overflow: hidden;
 transition: .3s;
 border: 1px solid;
 color: var(--color);
 z-index: 1;
}

.button::before, .button::after {
 margin-left: 5px;
 content: '';
 display: block;
 width: 20px;
 height: 20px;
 transform: translate(-50%, -50%);
 position: absolute;
 border-radius: 50%;
 z-index: -1;
 background-color: var(--color);
 transition: 0.8s ease;
}

.button::before {
 top: -1em;
 left: -1em;
}

.button::after {
 left: calc(100% + 1em);
 top: calc(100% + 1em);
}

.button:hover::before, .button:hover::after {
 height: 410px;
 width: 410px;
 background-color: #009999;
}

.button:hover {
 color: rgb(10, 25, 30);
}

.button:active {
 filter: brightness(.6);
}