.fb {font-weight: bold;}

.f14 {font-size: 14px;}
.f18 {font-size: 18px;}
.f20 {font-size: 20px;}

.mt0 {margin-top: 0;}

.mb0 {margin-bottom: 0;}

.w30p {width: 30%;}

.w90p-360px {width: calc(90% - 360px);}
.w90p-300px {width: calc(90% - 300px);}
.w90p-240px {width: calc(90% - 240px);}

.w360px {width: 360px;}

section {
    scroll-margin-top: 100px;
}