Portfolio not loading properly in mobile view – Html

I made this portfolio and it worked for desktop view but in mobile view it’s not working and breaking down
https://ruizxzx.github.io/Portfolio/

can anyone please tell what to do?????????????????????????????????????????????????????????????????????????????????????????????

If u need HTML code then comment it i will provide u with it

THANKYOU!!

CSS:

body {
    color: #40514E;
    margin: 0;
    margin-bottom: 0;
    text-align: center;
    font-family: 'Merriweather', serif;


}

h1 {
    margin-top: 0px;
    font-family: 'Sacramento', serif;
    color: #66BFBF;
    font-size: 560%;
    padding-top: 0;
    margin-top: 1px;
    margin-bottom: 0;
    padding-bottom: 0px;
}



h3 {
    font-family: "adobe-garamond-pro", serif;
font-weight: 400;
font-style: normal;
    color: #11999E;
}
h2 {
    font-family: 'Varela Round', sans-serif;
    font-variation-settings: 'wght' 100;
    font-weight: 400;
    font-style: normal;
    font-weight: normal;
    color: #66BFBF;
    
    font-style: normal;
    font-size: 2.5rem;
    margin-top: 10px;
}

.pro {
    color: rgb(111, 91, 91);
    text-decoration: underline;
    font-weight:bold;

}
.top-container {
    background-color: #476b7827;
    position: relative;
    padding-top: 200px;
    margin-bottom: 100px;
    width: 100%;
}




.top-cloud {
    position: relative;
    right: 450px;
    top: 100px;

}

.bottom-cloud {
    position: relative;
    left: 450px;
    bottom: 300px;
}

.mountain {
    position: relative;

}
.dp {
    width: 200px;
    padding-bottom: 40px;

}
.coder-img {
    height: 300px;
}

.photographer-img {
    height: 300px;
}
.skill-row {
    width: 50%;
    margin: 100px auto 100px auto;
    text-align: left;
    line-height: 2;
}
p {
    font-family: 'Montserrat', sans-serif;
    font-style: normal;
    line-height: 2;
    margin: 50px auto;
}
.skill-heading {
    color: #01777b;
    font-family: 'Kanit', sans-serif;
    font-size: 30px;
}

.coder-img {
    width: 25%;
    height: 25%;
    float: left;
    margin-right: 30px;
    margin-left: 30px;
}
.soundify-img {
    width: 25%;
    height: 25%;
    float: left;
    margin-right: 30px;
}

.photographer-img {
    width: 25%;
    height: 25%;
    float: right;
    margin: 0px 15px 10px 0px;
    padding: 20px;
 
}



.top-hr {
    margin-top: 80px;
    margin-bottom: 100px;
}



hr {
    border-style: none;
    border-top-style: dotted;
    border-color: rgb(70, 142, 183);
    border-width: 10px;
    width: 5%;
    margin: 100px auto;
    
    }
.bio {
    padding-bottom: 50px;
    width: 30%;
    margin: auto;
}

.pic {
    margin-left: 100px;
}

.contact-me {
    margin: 1px auto 60px; 
    width: 40%;

}
.dev {
    width: 100%;
}
.soundify-bio {
    margin: auto;
}
.btn {
    background: #67C0C0;
    background-image: -webkit-linear-gradient(top, #67C0C0, #3c5959);
    background-image: -moz-linear-gradient(top, #67C0C0, #3c5959);
    background-image: -ms-linear-gradient(top, #67C0C0, #3c5959);
    background-image: -o-linear-gradient(top, #67C0C0, #3c5959);
    background-image: linear-gradient(to bottom, #67C0C0, #3c5959);
    -webkit-border-radius: 10;
    -moz-border-radius: 10;
    border-radius: 10px;
    font-family: 'Varela Round', sans-serif;
    color: #ffffff;
    font-size: 20px;
    padding: 10px 20px 10px 20px;
    text-decoration: none;
  }
  
  .btn:hover {
    background: #1fc2bf;
    background-image: -webkit-linear-gradient(top, #1fc2bf, #39bf80);
    background-image: -moz-linear-gradient(top, #1fc2bf, #39bf80);
    background-image: -ms-linear-gradient(top, #1fc2bf, #39bf80);
    background-image: -o-linear-gradient(top, #1fc2bf, #39bf80);
    background-image: linear-gradient(to bottom, #1fc2bf, #39bf80);
    text-decoration: none;
  }
  .bottom-container {
    background-color: #93cdcc;
    padding: 50px 0px 3px;
  }

  a {
    color: #58a4a7;
    font-family: 'Varela Round', sans-serif;
    font-size: normal;
    text-decoration-line: none;
    margin: 10px 20px;

  }
  a:hover {
    color: #ffffff;
  }
  .copyright {
    color: #f6f6f6;
    font-size: 75%;
  }

It’s working fine in desktop browsers but i was it to be work in mobile view as well.
IM NEW BTW!