#head_1 {
    position: relative;
    top: 25%;
    width: 100%;
    height: 50%;
    margin: 0;
    padding-left: 80px;
    font-size: 3rem;
    text-align: center;
    align-items: center;
    color: white;
}

#head_2 {
    right: 10%;
    top: 10%;
    width: 10%!important;
    height: auto;
    font-size: 2rem;
    color: rgb(255, 255, 255);
    text-align: center;
    padding: 5px;
}

/* #head_3 {
    
} */
#head_3 {
    right: 0px!important;
    top: 10px!important;
    width: 20%!important;
    height: auto;
    font-size: 1.5rem;
    color: rgb(255, 255, 255);
    text-align: center;
    padding: 5px;
}

#head_4 {
    left: 210px;
    top: 5px;
    width: 18%;
    height: auto;
    font-size: 30px;
    color: rgb(255, 255, 255);
    text-align: center;
    padding: 5px;
}

#head_0 {
    left: 2%;
    top: 0px;
    width: 13%;
    height: 100%;
    background-image: url(../image/HuzhouCollegeLogo.png);
    background-size: 100% 90%;
    background-repeat: no-repeat;
    background-position: center;
}

#shiyan1 {position:absolute;
    top: 10%;
    left: 10%;
    height: 20%;
    width: 80%;
    display: flex;
    align-items: center;
    justify-content: space-around;
    color: white;
    cursor: pointer;
    border: 2px #2c4a82 solid;
    border-radius: 50px;
    background-color: #1874CD;
    font-size: 40px;
}

#shiyan2 {
    top: 40%;
    left: 10%;
    height: 20%;
    width: 80%;
    display: flex;
    align-items: center;
    justify-content: space-around;
    color: white;
    cursor: pointer;
    border: 2px #2c4a82 solid;
    border-radius: 50px;
    background-color: #1874CD;
    font-size: 40px;
}
#shiyan3 {
    top: 70%;
    left: 10%;
    height: 20%;
    width: 80%;
    display: flex;
    align-items: center;
    justify-content: space-around;
    color: white;
    cursor: pointer;
    border: 2px #2c4a82 solid;
    border-radius: 50px;
    background-color: #1874CD;
    font-size: 40px;
}

#logOut{

    height: 4%;
    width: 18%;
    top: 3%;
    left: 80%;
    /* background-color: #fff; */
    color: #fff;
    font-size: 20px;
    display: flex!important;
    align-items: center;
    justify-content: space-around;
}
#logOut_1{

    height: 100%;
    width: 20%;
    top: 0%;
    left: 12%;
    font-size: 1.5rem;
    display: flex!important;
    align-items: center;
    justify-content: space-around;
}
#logOut_2{

    height: 100%;
    width: 30%;
    top: 0%;
    left: 29%;
    font-size: 1.5rem;
    display: flex!important;
    align-items: center;
    justify-content: left;
}
#logOut_3{

    height: 100%;
    width: 30%;
    top: 0%;
    left: 53%;
    font-size: 1.5rem;
    display: flex!important;
    align-items: center;
    justify-content: space-around;
}