body {
    background-color: #333;
}

.flexbox {
    display: flex;
    flex-wrap: wrap;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: 100vh;
    gap: 30px;
}

.container {
    background: #5f5f5f;
    width: 200px;
    height: 200px;
    position: relative;
}

.title {
    color: #5f5f5f;
    text-align: center;
    padding-top: 45%;
}

.blockwhite {
    width: 0px;
    height: 30px;
    display: inline-block;
    background: #ffffff;
    position: absolute;
    top: -29%;
    left: -95%;
    transition: width 0.6s ease;
}

.container:hover .blockwhite {
    width: 600px;
}
.container:hover .title {
    color: #47fc00;
    transition-delay: 0.5s;
    transition-duration: 1s;
}