.all {
    margin-top: 50px;
    margin-left: 450px;
    position: relative;
    width: 620px;
    overflow: hidden;
    height: 450px;
}
.all:hover .btn button{
    display: inline;
}

.carousel {
    height: 450px;
}

section {
    font-size: 0;
    width: 2790px;
    height: 450px;
    position: absolute;
}

img {
    display: inline-block;
    width: 300px;
    height: 450px;
    float: left;
    margin-right: 10px;
}

button {
    border-radius: 50%;
    width: 50px;
    height: 50px;
    font-size: 34px;
    cursor: pointer;
    display: none;
    border: none;
    opacity: 0.7;
}

button:focus {
    outline: none;
}
.left {
    position: relative;
    top: -250px;
    left: 60px;
}

.right {
    position: relative;
    top: -250px;
    left: 466px;
}
.point {
    position: absolute;
    top: 424px;
    left: 282px;
    width: 80px;
    display: inline-block;
    outline: none;
}
span {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    display: inline-block;
    background-color: #303233;
    cursor: pointer;
    border: 1px solid #5a5c5d;
}
.span-hover {
    background-color: #fa6f13;
}
