* { box-sizing: border-box; margin: 0; padding: 0;}

body { font-family: Helvetica, sans-serif; background: white; color: black; line-height: 1.4; font-weight: 600;}


#logo{position: fixed; top: 0; z-index: 1; width: 100%; max-width: 1800px; padding: 1.25em 1.5em; color: white; mix-blend-mode: difference; line-height: 1.2;}
#wrapper-about {background-color:white; margin-top: 28em; margin-bottom: 18em;}
#about {max-width: 750px; position: center; margin-left: auto; margin-right: auto; padding-left:1.5em; padding-right:1.5em;}
img{width: 100%; height: auto;}

h1 {font-size: 48px; font-weight: bold;}
h2 {font-size: 24px; padding-top: 0.5em; padding-bottom: 0.5em; font-weight: 600; text-indent: 1.5em; border-top: solid 1px; background-color: none;}

p{font-size: 24px; font-weight: 600;}
p+p{padding-top:0em; text-indent: 1.5em;}
ul{padding-left: 2em; font-size: 18px; text-indent: -2em; list-style-type: none; font-weight: 600;}
mark{font-weight: 600; background-color: white;}

.right{margin-bottom: 1em;}
#research{padding-top: 0.5em; margin-bottom: 1em; padding-bottom: 1em; background-color: none;}
#call{padding-top: 0.5em; margin-bottom: 1em; padding-bottom: 1em; background-color: none;}
#contact{padding: 1em 1.5em; line-height: 1.2;}

#portrait {font-size: 25px; padding-top: 2em; border-top: solid 1px; padding-bottom: 1em;}
#portrait-caption {position: right; text-align: right; bottom: 0.5em; right: 0.5em; font-size: 12px; letter-spacing: 0.25px;}


a:link { text-decoration: none; color: black;}
a:visited { text-decoration: none; color: black;}


@media (max-width: 770px)
{
h1{font-size: 35px;}
h2{font-size: 20px;}
p{font-size: 20px;}
ul{font-size: 15px;}
#wrapper-about {margin-bottom: 14em;}
}

@media (max-width: 520px)
{
#wrapper-about {margin-top: 24em;}
#about {padding-left:1em; padding-right:1em;}
#logo{padding: 1em 1em; color: white; mix-blend-mode: difference; line-height: 1.2;}
h1{font-size: 25px;}
h2{font-size: 15px;}
p{font-size: 15px;}
ul{font-size: 12px;}
#portrait-caption {font-size: 12px;}
#wrapper-about {margin-bottom: 10em;}
#contact{padding: 1em 1em;}
}