body {
    background: #222;
    color: #e6e6e6;
    font-family: Open Sans,sans-serif;
    
}
#head{
    margin-top: 30px;
    font-size: 30px;
    line-height: 1.2;
    font-family: Open Sans,sans-serif;
}
#container{
    width: 100%;
    /* border: 1px solid red; */

}
#sub_conatiner{
    width: 80%;
    margin: auto;
    /* border: 1px solid blue; */
}
#path_image{
    width: 15%;
    height: 150px;
    margin: auto;
    background-position: center;
    background-repeat: no-repeat;
    background-attachment: inherit;
    background-size:150px 150px;
    /* background-image:url('/images/svgexport-2.png'); */
    /* border: 1px solid black; */
}
#path_image1{
    width: 15%;
    margin-top: 20px;
    height: 150px;
    margin: auto;
    background-position: center;
    background-repeat: no-repeat;
    background-attachment: inherit;
    background-size:150px 150px;
    /* background-image:url('/images/svgexport-15.png'); */
    /* border: 1px solid black; */
}
#learn_path{
    color: white;
    margin: auto;
    text-align: center;
}
#line{
    width: 80%;
    margin: auto;
}
.course{
    display: grid;
    grid-template-columns: repeat(3,304px);
    grid-template-rows: repeat(2, 600px);
    grid-gap: 20px; 
}
.course>div{
    /* border: 1px solid wheat; */
    tab-size: 4;
    font-family: Open Sans,sans-serif;
    list-style: none;
    list-style-image: none;
    box-sizing: border-box;
    text-align: center;
    color: #e6e6e6;
    background: #383838;
    margin-bottom: 28px;
    overflow: hidden;
    position: relative;
    
}

.Topic{
    display: grid;
    grid-template-columns: repeat(3,304px);
    grid-template-rows: repeat(4, 600px);
    grid-gap: 20px;
}
.Topic>div{
    tab-size: 4;
    font-family: Open Sans,sans-serif;
    
    list-style: none;
    list-style-image: none;
    box-sizing: border-box;
    text-align: center;
    color: #e6e6e6;
    background: #383838;
    margin-bottom: 28px;
    overflow: hidden;
}

.circle{
    width: 99%;
    padding: 10px  10px ;
    /* margin: auto; */
    /* background-image: url('/images/svgexport-2.png'); */
    height: 50%;
    
    background-position: center;
    background-repeat: no-repeat;
   
    background-attachment: inherit;
    
    background-size:160px 160px;
    box-sizing: border-box;
    
    /* border: 1px solid red; */
}
/* #back_image{

} */

#back_image{
    background-image: url('/images/svgexport-4.png');
    /* background-color: #e6e6e6; */
    /* opacity: 0.5; */
    filter: grayscale(10%);
    
}
#back_image1{
    
    background-image:url("/images/svgexport-6.png");
}
#back_image2{
    background-image:url('/images/svgexport-8.png');
}
#back_image3{
    background-image:url('/images/svgexport-10.png');
}
#back_image4{
    background-image:url('/images/svgexport-12.png');
}
#back_image5{
    background-image:url('/images/svgexport-14.png');
}
#back_image6{
    background-image:url('/images/svgexport-17.png');
}
#back_image7{
    background-image:url('/images/svgexport-19.png');
}
#back_image8{
    background-image:url('/images/svgexport-21.png');
}
#back_image9{
    background-image:url('/images/svgexport-23.png');
}
#back_image10{
    background-image:url('/images/svgexport-25.png');
}
#back_image11{
    background-image:url('/images/svgexport-27.png');
}
#back_image12{
    background-image:url('/images/TypeScript logo.png');
}
#back_image13{
    background-image:url('/images/svgexport-30.png');
}
#back_image14{
    background-image:url('/images/svgexport-32.png');
}
#back_image15{
    background-image:url('/images/svgexport-34.png');
}
#back_image16{
    background-image:url('/images/svgexport-36.png');
}
#back_image17{
    background-image:url('/images/svgexport-38.png');
}

img{
    width: 100%;
    display: block;
    /* height: auto; */
    margin-left: auto;
    margin-right: auto;
    /* filter: grayscale(100%); */
}
.start1{
    font-family: Open Sans,sans-serif;
    list-style: none;
    list-style-image: none;
    box-sizing: border-box;
    border: none;
    border-radius: 40px;
    color: #fff;
    text-align: center;
    vertical-align: middle;
    display: inline-block;
    padding: 12px 12px;
    text-decoration: none;
    margin: auto;
    min-width: 175px;
}
.start{
    
    font-family: Open Sans,sans-serif;
    list-style: none;
    list-style-image: none;
    box-sizing: border-box;
    border: none;
    border-radius: 40px;
    color: #fff;
    text-align: center;
    vertical-align: middle;
    display: inline-block;
    padding: 10px 10px;
    text-decoration: none;
    margin: auto;
    min-width: 175px;
}
.button{
    margin-top: 20px;
    /* padding-top: 5px; */
}
.button1{
    margin-top: 50px;
    padding-top: 10px;
}
#para{
    margin-top: 15px;
    font-size: 18px;
    font-weight: 500;
    /* font-size: 20px; */
    line-height: 1.5;
    font-family: Open Sans,sans-serif;
}