main{
    margin-left: 10%;
    margin-right: 10%;
}
main>a{
    margin-top: 1em;
    height: 3.5em;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color:rgba(128, 128, 128, 0.511);
    text-decoration: none;
}
main a:hover{
    background-color:rgba(128, 128, 128, 0.909);
}
main a p{
    margin-top: 0;
    margin-bottom: 0;
    font-size: 2em;
}
@media screen and (max-width: 550px) {
    main a p{
        font-size: 1.5em;
    }
}
main a img{
    height: 100%;
    margin-right: 1em;
}
#linux_link{
    color: rgb(245, 190, 4);
}
#android_link{
    color: rgb(165, 199, 54);
}
#windows_link{
    color: rgb(0, 120, 212);
}
.createTime{
    font-size: 75%;
    color: rgb(58, 58, 58);
}