@yandex/ui/Button/_theme/Button_theme_action.css

Yandex UI components

.Button2_theme_action {
    position: relative;
    z-index: 0;

    color: #000;
    border: none;
    outline: none;
}

.Button2_theme_action::before {
    border-radius: 3px;
    background-color: #ffdb4d;
}

.Button2.Button2_theme_action:not([aria-disabled='true']):active::before,
.Button2.Button2_theme_action.Button2_pressed[class]::before {
    background-color: #fc0;
}

.Button2_theme_action[aria-disabled='true']::before,
.Button2_theme_action.Button2_disabled::before {
    background-color: rgba(0, 0, 0, .08);
}

.Button2_theme_action[aria-disabled='true'] .Button2-Text,
.Button2_theme_action[aria-disabled='true'] .Button2-Icon,
.Button2_theme_action.Button2_disabled .Button2-Text,
.Button2_theme_action.Button2_disabled .Button2-Icon {
    opacity: .5;
}

.Button2_theme_action.Button2_progress::before {
    background-color: #ffd426;
    background-image: repeating-linear-gradient(-45deg, #ffd426, #ffd426 4px, #f7c600 4px, #f7c600 8px);
    background-size: 34px 34px; /* 34 ~= Math.sqrt(8² + 8²) * 3times = 33.941125496954285 */
}

.Button2.Button2_theme_action.Button2_progress .Button2-Text,
.Button2.Button2_theme_action.Button2_progress .Button2-Icon {
    opacity: 1;
}

@keyframes button2-progress {
    0% {
        background-position: -12px 0;
    }

    100% {
        background-position: 0 0;
    }
}

.Button2.Button2_theme_action.Button2_progress::before {
    animation-name: button2-progress;
    animation-duration: .5s;
    animation-timing-function: linear;
    animation-iteration-count: infinite;
}