style.css

*{
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: monaco,Consolas,Lucida Console,monospace;
}

p,h1,h2 {
    color: white;
}

#fullpage{
    text-align: center;
}

#header {
    margin-top: -10%;
    font-size: 150%;
}

#avatar img{
    border-radius: 30%;
    margin-top: 5%;
    width: 250px;
}

#text1 {
    margin-top: 5%;
    margin-left: 25%;
    width: 50%;
}

.sectitle {
    margin-top: 0%;
    font-size: 200%;
}

#aboutMeText {
    margin-top: 2%;
    width: 76%;
    margin-left: 12%;
    font-size: 140%;
}

#group_photo img{
    margin-top: 2%;
    border-radius: 3%;
    width: 600px;
}

#skills {
    border-collapse: collapse;
    width: 70%;
    margin-left: 15%;
    margin-top: 10%;
}

#skills td, #skills th {
    border: 1px solid #ddd;
    padding: 8px;
    
  }
  
#skills tr:nth-child(even){background-color: #f2f2f2;}

#skills tr:hover {background-color: #ddd;}
  
#skills th {
    padding-top: 12px;
    padding-bottom: 12px;
    text-align: left;
    background-color: #04AA6D;
    color: white;
    text-align: center;
}

#stay {
    margin-bottom:10%;
}

@media only screen and (max-width: 400px)
{
    #group_photo img{
        width: 350px;
    }

    #header{
        font-size: 100%;
    }

    #avatar img{
        border-radius: 30%;
        margin-top: 2%;
        width: 150px;
    }

    .sectitle {
        margin-top: 0%;
        font-size: 100%;
    }

    #aboutMeText {
        margin-top: 2%;
        width: 80%;
        margin-left: 10%;
        font-size: 100%;
    }

    #skills {
        border-collapse: collapse;
        width: 30%;
        margin-left: 0%;
        margin-top: 3%;
    }
}

.subtitle {
    margin-top: 1%;
    width: 76%;
    margin-left: 12%;
    font-weight: bold;
}