html, body {margin: 0; height: 0; padding: 0;font-size: 62.5%;}
a{text-decoration: none;color:#494949;}
h1,h2,h3,a,li,p,td {font-family: "Roboto", sans-serif;}

@media screen and(min-width:900px){body,html{font-size:62,5%;}}

@media screen and(min-width:600px){body,html{font-size:70%;}}

@media screen and (max-width: 288px){ div#img {display: none;}}

#img { width: 210px;
    width: 21rem;
    float: left; 
    margin: 0 0 0 10px;
    margin: 0 0 0 1rem;
}

#img {height: 40px;height: 5.1rem;}

header {
    padding: 0;
    margin: 0;
    box-sizing: border-box;
    position: fixed;
    width: 100%;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.7);
    box-shadow: 0 0.1rem 0.3rem rgba(0, 0, 0.7);
    z-index: 9;
    height: 52px;
    height: 5.2rem;
    top: 0;
    left: 0;
}

nav {
    background: white;
    height: 52px;
    height: 5.2rem;
    width: 100%;
}

#logo {
    line-height: 52px;
    line-height: 5.2rem;
    padding: 0 20px;
    padding: 0 2rem;
    
}

nav ul {
    float: right;
    margin-right: 20px;
    margin-right: 2rem;
    margin-top: 0;

}

nav ul li {
    display: inline-block;
    line-height: 52px;
    line-height: 5.2rem;
    margin: 0 20px;
    margin: 0 2rem;
}

nav ul li a {
    font-size: 16px;
    font-size: 1.6rem;
}

a:hover {
    color:#088A29;
}

.checkbtn {
    font-size: 30px;
    font-size: 3rem;
    color: #494949;
    float: right;
    line-height: 52px;
    line-height: 5.2rem;
    margin-right: 6%;
    cursor: pointer;
    display: none;
}

#check{
    display: none;
}

@media (max-width: 811px){
    .checkbtn{
        display: block;
    }
    header nav ul{
        position: fixed;
        max-height: 900px;
        max-height: 90rem;
        background-color: white;
        top: 60px;
        top: 6rem;
        left: -3000px;
        text-align: center;
        width: 100%;
        transition: all .3s;
        top: 52px;
        top: 5.2rem;
    }
    nav ul li {
        display: block;
    }
    nav ul li a {
        font-size: 16px;
        font-size: 1.6rem;
    }
    #check:checked~ul{
        left: 0;
    }
}

header nav label img {
    padding-top: 3px;
    padding-top: 0.3rem;
}

header nav ul {
    padding-left: 0;
}

@media (max-width: 281px) {#Logo {
        padding-left: 2px;
        padding-left: 0.2rem;
        padding-right: 3px;
        padding-right: 0.3rem;
    }
}

@media (max-width: 262px) {#Logo {
    display: none;
    }
    
}

@media (min-width: 261px) {#Logo2 {
    display: none;
    }
}

body {
    background-color: #EDEBE8;
}

#Mathetricks {
    background-color: white;
    width: 60%;
    margin-left: auto;
    margin-right: auto;
}

@media screen and (max-width:790px) {#Mathetricks {width: 90%;}}

@media screen and (max-width:600px) {#Mathetricks {width: 96%;}}

@media screen and (max-width:390px) {#Mathetricks {width: 100%;}}

@media screen and (max-width:2000px) {#Mathetricks {padding-left: 6rem; }

@media screen and (max-width:800px) {#Mathetricks {padding-left: 3rem; }}

@media screen and (max-width:390px) {#Mathetricks {padding-left: 0rem; }}}

@media screen and (max-width:2000px) {#Mathetricks {padding-right: 6rem; }}

@media screen and (max-width:800px) {#Mathetricks {padding-right: 3rem; }}

@media screen and (max-width:390px) {#Mathetricks {padding-right: 0rem; }}

#home1 {
    background-color: white;
    font-size: 16px;
    font-size: 1.6rem;
    padding: 52px 0 0 0;
    padding: 5.2rem 0 0 0;
    border: 1px;
    border-radius: 2px;

}

#home2 {
    background-color: white;
    font-size: 16px;
    font-size: 1.6rem;
    padding: 16px 0 0 0;
    padding: 1.6rem 0 0 0;
    border: 1px;
    border-radius: 2px;
}

#home3 {
    background-color: white;
    font-size: 16px;
    font-size: 1.6rem;
    padding: 16px 0 0 0;
    padding: 1.6rem 0 0 0;
    border: 1px;
    border-radius: 2px;
}


#home1 img {
    float: left;
    padding: 1% 1% 1% 0;
    margin-right: 2%;
    max-width: 100%;
    height: auto;
}

#link {
    background-color: white;
    font-size: 16px;
    font-size: 1.6rem;
    padding: 16px 0 0 0;
    padding: 1.6rem 0 0 0;
    border: 1px;
    border-radius: 2px;
}


ol {
    font-size: 16px;
    font-size: 1.6rem;
}

#ol li::marker {
    color: red;
}

#Unten {
    margin-left: auto;
    margin-right: auto;
    width: 100%;
    background-color: #494949;
    padding-bottom: 0;
    padding-top: 10px;
    padding-top: 1rem;
    font-size: 12px;
    font-size: 1.2rem;
    height: 52px;
    height: 5.2rem;
    color: white;
    text-align: center;
    font-family: "Roboto" , sans-serif;
}