展示效果

<div class="box">slogan
</div>

css部分

css">.box {position: relative;width: 183px;height: 22px;border-radius: 6px 0 6px 0;background-color: #005ed9;overflow: hidden;display: flex;align-items: center;justify-content: center;font-size: 12px;
}.box:after {position: absolute;left: -40%;top: 0;width: 10px;height: 100%;content: "";background: linear-gradient(to right,rgba(255, 255, 255, 0) 0,rgba(255, 255, 255, 0.7) 50%,rgba(255, 255, 255, 0) 90%);transform: skewX(45deg);animation: shine 3s infinite;
}@keyframes shine {100% {left: 100%;transition: 2s ease;}
}