body {
    background-image: url("background.png");
    background-repeat: repeat-y;
    background-attachment: fixed;
    background-position: center;
    background-size: 100%;
    color: white;
}

.container h3 {
    text-align: center;
    line-height: 1.4;
    color: white;
    font-family: "Arial Black", Gadget, sans-serif; 
}

.container h2 {
    font-family: "Arial Black", Gadget, sans-serif; 
    text-align: center;
    line-height: 1.4;
    font-size: 200%;
}

.container h1 {
font-family: "Arial Black", "Arial Bold", Gadget, sans-serif; 
text-align: center;
line-height: 1.4;
font-size: 300%;
}
.col-sm-5 h3 {
    text-align: center;
}

.col-sm-7 h2 {
    text-align: left;
}

.col-sm-5 img {
    transition: all 0.3s linear;
    cursor: pointer;
    filter: grayscale(30%);
}

.col-sm-5 img:hover,:focus, :active {
    filter: grayscale(0%);
}