body
{
    margin: 0;
    padding: 0;
}

.logo
{
    border-radius: 50%;
    height: 100px;
    width: 100px;
}

.dropup
{
    background: #202030;
    color: dodgerblue;
}

.courses
{
    border-bottom: #101010 solid;
    width: 100%;
    display: block;
    text-align: center;
    font-family: cursive;
    padding: 10px 0px;
    font-size: 30px;
}

.courses:hover
{
    background: orange;
    color: #202030;
}

.fixclose
{
    position: fixed;
    width: 100%;
    text-align: center;
    background-color: rgba(20,20,100,0.4);
    border-bottom: #101010 solid;
    width: 100%;
    text-align: center;
    font-family: cursive;
    padding: 10px 0px;
    color: red;
    font-weight: 900;
    cursor: pointer;
}

.mob-d-none
{
    display: block;
}

.read
{
    width: 200px;
    padding: 10px;
    background: #202030;
    color: yellow;
    border-radius: 10px;
    border: orange 3px solid;
}

@media only screen and (max-width:600px)
{
    .mob-d-none
    {
        display: none;
    }
}