.about {
    background-color:rgb(230, 230, 250);
}

.activities {
    background-color:MediumAquaMarine;
}

.portfolio {
    background-color:#FFE4E1;
    color:RosyBrown;
}

img.grayscale-filter:hover {
    filter: grayscale(100%);
}

.header {
    border-style:dashed;
    
}

.title {
    border-style:solid;
    border-color:coral;
}

.bottom {
    border-style:dotted;
    border-color:coral;
}

.OSHA {
    border-style:dotted;
    cursor: pointer;
}

.h1:hover::after {
    background-color:teal;
    content: "Learn more about me!";
}

.image {
    opacity:0.5;
    padding:10px;
     border: 4px solid black;
}

.hue-90{
    height:150px:
    filter:hue-rotate(90deg) brightness(75%);
   
}


img {
    border:solid;
    border-color:black;
    border-width:5px;
    height:200px;
    width:200px;
    transition:height 1s, width 1s;
}
    
    img:hover {
    height:400px;
    width:400px;
}