* {
    margin: 0;
    box-sizing: border-box;
    text-decoration: none;
}

#Eraser::before {
    content: url('./images/eraser.png');
}

#penl::before {
    content: url('./images/pen.png');
}

#colorl::before {
    content: url('./images/color.png');
}

#b_color::before {
    content: url('./images/color.png');
}

#pen {
    padding: 10px;
    border-radius: 9px;
    cursor: pointer;
}

.opt {
    padding: 10px;
    border-radius: 9px;
}

#Bcolor {
    padding: 10px;
    border-radius: 9px;
    cursor: pointer;
}

#color {
    padding: 10px;
    border-radius: 9px;
    cursor: pointer;
}


#canvas {

    margin-top: 1px;
    cursor: url('/images/pen.png'), auto;


}





.wrapper {
    width: 100vw;
    height: 100vh;
    color: #000;

}

nav {
    position: fixed;
    margin-top: 0px;
    width: 100vw;
    background-color: #f5f5f5;
    height: 10vh;
    box-shadow: #2e3032 salmon;
}

.navbar {
    width: 100%;
    height: 100%;
}

.navbar-brand {
    font-size: 4em;
    line-height: 80px;
    padding: 0 30px;
    margin: 0 30px;
}

.toogle_btn {
    display: none;
}

.navbar-brand a {
    color: rgb(14, 10, 10);
}

nav ul {
    float: right;
    margin-right: 20px;
}

ul li {
    display: inline-block;
    line-height: 30px;
    padding: 20px;
    margin: 0 5px;
}



.btn {
    padding: 8px;
    border-radius: 9px;
    cursor: pointer;
}

.checkbtn {
    color: aliceblue;
    float: right;
    line-height: 90px;
    cursor: pointer;
    margin-right: 40px;
    font-size: 30px;
    display: none;
}

#check {
    display: none;
}


#main-content {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    margin-top: 7.5vh;
    width: 100vw;
    height: 80vh;

}




#footer {
    margin-top: 7px;
    margin-bottom: 0px;
    background-color: #2e3032;
    width: 100vw;
    height: 10vh;
    color: #ddd;

}



@media (max-width:856px) {


    #Eraser::before {
        content: url('/images/eraser.png');
    }

    #penl::before {
        content: url('/images/pen.png');
    }

    #colorl::before {
        content: url('/images/color.png');
    }

    #pen {
        padding: 10px;
        border-radius: 9px;
        cursor: pointer;
    }

    .opt {
        padding: 10px;
        border-radius: 9px;
    }

    #color {
        padding: 10px;
        border-radius: 9px;
        cursor: pointer;
    }


    #canvas {

        margin-top: 1px;
        cursor: url('/images/pen.png'), auto;


    }

    .navbar-brand {
        font-size: 4em;
        padding: 0 40px;
        margin: 0 30px;
    }

    .navbar-brand a {
        color: red;
    }

    nav ul {
        position: fixed;
        width: 100%;
        height: 100vh;
        top: 65px;
        left: -100%;
        background-color: rgb(34, 98, 154);
        text-align: center;
    }

    #check:checked~ul {
        left: 0;
    }

    ul li {
        display: block;
    }

    ul li a {
        border-radius: 9px;
        color: red;
    }


    .checkbtn {
        display: block;
    }


    #main-content {

        margin-top: 10vh;
        width: 100vw;
        height: 80vh;
    }

    #footer {

        background-color: rgb(2, 2, 2);
        width: 100vw;
        height: 10vh;
        color: #ddd;
    }
}




@media screen and (max-width:400px) {


    #Eraser::before {
        content: url('/images/eraser.png');
    }

    #penl::before {
        content: url('/images/pen.png');
    }

    #colorl::before {
        content: url('/images/color.png');
    }

    #pen {
        padding: 10px;
        border-radius: 9px;
        cursor: pointer;
    }

    .opt {
        padding: 10px;
        border-radius: 9px;
    }

    #color {
        padding: 10px;
        border-radius: 9px;
        cursor: pointer;
    }


    #canvas {

        margin-top: 1px;
        cursor: url('/images/pen.png'), auto;


    }


    .navbar-brand {
        font-size: 3em;
        padding: 0 10px;
        margin: 0 10px;
    }

    .navbar-brand a {
        color: red;
    }

    nav ul {
        position: fixed;
        width: 100%;
        height: 100vh;
        top: 65px;
        left: -100%;
        background-color: rgb(34, 98, 154);
        text-align: center;
    }

    #check:checked~ul {
        left: 0;
    }

    ul li {

        display: block;

    }

    ul li a {
        border-radius: 9px;
        color: red;
    }

    .checkbtn {
        display: block;
    }

    #main-content {

        margin-top: 10vh;
        width: 100vw;
        height: 80vh;
    }

    #footer {

        background-color: rgb(2, 2, 2);
        width: 100vw;
        height: 10vh;
        color: #ddd;
    }
}

@media (max-width:228px) {

    #Eraser::before {
        content: url('/images/eraser.png');
    }

    #penl::before {
        content: url('/images/pen.png');
    }

    #colorl::before {
        content: url('/images/color.png');
    }

    #pen {
        padding: 10px;
        border-radius: 9px;
        cursor: pointer;
    }

    .opt {
        padding: 10px;
        border-radius: 9px;
    }

    #color {
        padding: 10px;
        border-radius: 9px;
        cursor: pointer;
    }


    #canvas {

        margin-top: 1px;
        cursor: url('/images/pen.png'), auto;


    }

    nav {
        width: 100vw;
        height: 12%;
    }

    .navbar-brand {
        font-size: 2em;
        padding: 0 5px;
        margin: 0 5px;
    }

    .checkbtn {
        display: block;
        margin-right: 10px;
    }

    #main-content {

        margin-top: 10vh;
        width: 100vw;
        height: 80vh;
    }

    #footer {

        background-color: rgb(2, 2, 2);
        width: 100vw;
        height: 10vh;
        color: #ddd;
    }
}

@media (max-width:169px) {

    #Eraser::before {
        content: url('/images/eraser.png');
    }

    #penl::before {
        content: url('/images/pen.png');
    }

    #colorl::before {
        content: url('/images/color.png');
    }

    #pen {
        padding: 10px;
        border-radius: 9px;
        cursor: pointer;
    }

    .opt {
        padding: 10px;
        border-radius: 9px;
    }

    #color {
        padding: 10px;
        border-radius: 9px;
        cursor: pointer;
    }


    #canvas {

        margin-top: 1px;
        cursor: url('/images/pen.png'), auto;


    }

    nav {
        width: 100vw;
        height: 12%;
    }

    .navbar-brand {
        font-size: 1.7em;

    }

    .checkbtn {
        display: block;
        margin-right: 5px;
    }

    #main-content {

        margin-top: 10vh;
        width: 100vw;
        height: 80vh;
    }

    #footer {

        background-color: rgb(2, 2, 2);
        width: 100vw;
        height: 10vh;
        color: #ddd;
    }

}