:root {
    --black: #2b0909;
    --light-back0-color: #f1f1f1;
    --light-shadow-color: rgba(53, 8, 8, 0.33);
    --light-border-input: rgba(161, 120, 120, 0.12);
    --light-background-color: #1a2d42;
    --light-background-color2: #132536;
    --light-background-wrapper: rgba(255, 255, 255, 0.8);
    --light-color-up-page: #c4c4c4;
    --light-border: rgba(207, 176, 176, 0.5);
    --light-color-input: #271111;
    --light-link: #00459c;
    --light-hover-background: #e4bdbd;
    --light-active-background: #d36060;

    --dark-back1-color: #37505b;
}

.btn {
    margin: 10px;
    padding: 3px;
    display: flex;
    justify-content: center;
    align-items: center;
    width: 100%;
    min-height: 45px;
    border: none;
    outline: none;
    background: var(--light-back0-color);
    border-radius: 40px;
    box-shadow: 0 0 10px var(--light-shadow-color);
    cursor: pointer;
    font-size: 16px;
    color: var(--black);
    font-weight: 600;
    transition: background 0.2s linear;
}

.btn:hover {
    background: var(--light-hover-background);
}

.btn:active {
    background: var(--light-active-background);
}