div {
    border-radius: 1rem;
    border-left: 3px solid #a5a8aa;
    padding: 10px 30px;
    margin: 10px;
}
h2 {
    background-color: #c2c5c7;
    border-radius: 1rem;
    padding: 10px 20px;
    margin: 30px 10px 0px 10px;
}

#red-text {
    color: red;
}
#blue-text {
    color: #0000ff;
}
#green-text {
    color: rgb(0, 255, 0);
}


#large-text {
    font-size: large;
}
#medium-text {
    font-size: medium;
}
#small-text {
    font-size: small;
}
#px-text {
    font-size: 10px;
}
#em-text {
    font-size: 2em;
}
#rem-text {
    font-size: 2rem;
}

#font-courier {
    font-family: 'Courier New', Courier, monospace;
}
#font-georgia {
    font-family: Georgia, 'Times New Roman', Times, serif;
}

#_bold {
    font-weight: bold;
}
#_100 {
    font-weight: 100;
}
#_500 {
    font-weight: 500;
}
#_900 {
    font-weight: 900;
}

#_3px {
    line-height: 3px;
}
#_1 {
    line-height: 1;
}
#_2 {
    line-height: 2;
}

#_none {
    text-decoration: none;
}
#_underline {
    text-decoration: underline;
}
#_line-through {
    text-decoration: line-through;
}