body {
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    margin: 0;
    background-color: white;
    font-family: 'Arial', sans-serif;
    user-select: none;
}

.container {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    grid-template-rows: repeat(3, 1fr);
    gap: 0;
    width: 100%;
    height: 100%;
    background-color: white;
    border-radius: 0;
    box-shadow: none;
    overflow: hidden;
    background: transparent;
}

.square {
    width: 100%;
    height: 100%;
    background-color: white;
    margin: 0;
    cursor: pointer;
    transition: background-color 0.3s ease;
    box-shadow: none;
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 36px;
    color: #87ceeb;
    animation: none;
    background: linear-gradient(120deg, #ffffff 0%, #eeeeee 100%);
    transition: background-color 0.3s ease, transform 0.3s ease, font-size 0.3s ease;
}

.square span {
    animation: fade 40ms ease-in-out;
    animation-fill-mode: forwards;
    user-select: none;
}

.square:hover {
    font-size: 48px;
    color: #ffffff;
    text-align: center;
    text-transform: uppercase;
    background: linear-gradient(120deg, #add8e6 0%, #87ceeb 100%);
}

.square:active {
    background: linear-gradient(120deg, #87ceeb 0%, #6495ed 100%);
}

@keyframes fade {
    0% {opacity: 0; transform: translateY(-40px);}
    50% {opacity: 1; transform: translateY(0px);}
    100% {opacity: 0; transform: translateY(40px);}
}