* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: url('../image/chichi.png') no-repeat center center fixed;
    background-size: cover;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #333;
    position: relative;
    overflow: hidden;
}

body::before {
    content: '';
    position: fixed;
    top: 50%;
    left: 50%;
    width: 250vw;
    height: 250vh;
    background-image: url('../image/chichi.png');
    background-size: contain;
    background-position: center;
    background-repeat: no-repeat;
    z-index: -1;
    transform: translate(-50%, -50%);
    animation: spin 2.8s linear infinite;
}

@keyframes spin {
    0% {
        transform: translate(-50%, -50%) rotate(0deg);
    }

    100% {
        transform: translate(-50%, -50%) rotate(360deg);
    }
}

.h1-con {
    padding-bottom: 65%;
    padding-top: 35px;
    width: 250vw;
    height: 250vh;
}

.h1 {
    display: flex;
    justify-content: center;
    align-items: center;
    color: #363333;
}

.h2 {
    display: flex;
    justify-content: center;
    align-items: center;
    color: #363333;
    line-height: 35px;
}

.tested {
    position: fixed;
    bottom: 20px;
    right: 20px;
    z-index: 10;
}

.tested img {
    width: 300px;
    height: auto;
    opacity: 0.7;
    transition: all 0.3s ease;
    cursor: pointer;
}

.tested img:hover {
    opacity: 1;
    transform: scale(1.1) translateY(-5px);
}

a {
    all: unset;
}

/* back button */
.back-button {
    position: absolute;
    top: 20px;
    left: 20px;
    background: rgba(255, 255, 255, 0.2);
    color: white;
    border: none;
    padding: 10px 20px;
    border-radius: 25px;
    cursor: pointer;
    font-size: 16px;
    backdrop-filter: blur(10px);
    transition: all 0.2s ease;
}

.back-button:hover {
    background: rgba(255, 255, 255, 0.3);
    transform: translateY(-2px);
}