main.css

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: 'Raleway', sans-serif;
}
body,
html {
  height: 100%;
}

/* The hero image */
.hero-image {
  /* Use "linear-gradient" to add a darken background effect to the image (photographer.jpg). This will make the text easier to read */
  background-image: linear-gradient(rgb(0 0 0 / 52%), rgb(0 0 0 / 66%)),
    url(images/pexels-negative-space-169573.jpg);

  /* Set a specific height */
  height: 50%;

  /* Position and center the image to scale nicely on all screens */
  background-position: center;
  background-repeat: no-repeat;
  background-size: cover;
  position: relative;
  padding-bottom: 600px;
}

/* Place text in the middle of the image */
.hero-text {
  text-align: center;
  position: absolute;
  top: 70%;
  left: 50%;
  transform: translate(-50%, -50%);
  color: white;
  font-family: 'Raleway', sans-serif;
}

body {
  overflow-x: hidden;
  overflow-y: auto;
}
footer {
  background-color: #0277bd;
  color: #fff;
  height: 285px;
  opacity: 0.9;
}
figure {
  margin: 0;
}
.mobile-menu-button {
  display: none;
}
.profile-image {
  width: 100%;
  margin-top: 68px;
  opacity: 0.8;
}
.container {
  width: 100%;
  margin: auto;
  display: flex;
  flex-wrap: wrap;
  align-content: flex-start;
  flex-flow: column;
  line-height: 2;
  padding: 30px;
  color: #00000078;
}
.white-bg {
  background-color: #fff;
}
.grey-bg {
  background-color: whitesmoke;
}
.center-vertical {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
}
.avatar {
  display: block;
  margin-left: auto;
  margin-right: auto;
  width: 150px;
}
.circle-icon {
  background: rgba(0, 0, 255, 0.466);
  padding: 40px;
  width: 150px;
  border-radius: 50%;
  box-sizing: content-box;
  margin-top: 45px;
  margin-left: auto;
  margin-right: auto;
}
.stack img {
  opacity: 0.7;
  margin-top: 50px;
  width: 100%;
  vertical-align: middle !important;
}
.stack img:hover {
  opacity: 1;
}
.resume-item {
  margin-left: 5%;
}
.grapevine-container {
  width: 50%;
  margin: auto;
}
.grapevine-container h2 {
  text-align: center;
}
#about {
  background-color: whitesmoke;
}
#resume {
  background-color: #fff !important;
}
#skills {
  background-color: whitesmoke;
}
#about-content p {
  margin-bottom: 30px;
}
#resume ul {
  margin-bottom: 30px;
}
#portfolio {
  background-color: #fff;
}
#certifications {
  background-color: whitesmoke;
}
#grapevine-img {
  opacity: 0.8;
  width: 100%;
  border-radius: 5px;
  border: 1px solid rgba(0, 0, 0, 0.171);
}
#grapevine-img:hover {
  opacity: 1;
}
.footer-contact {
  color: #fff;
}
.icon-credit {
  margin-top: 37%;
  font-size: 0.7rem;
  color: whitesmoke;
  text-align: center;
}
.icon-credit a {
  text-decoration: underline;
  color: whitesmoke;
  cursor: pointer;
}
.contact-links {
  text-align: left;
  line-height: 1.7;
  color: #fff;
}
.contact-links a {
  text-decoration: none;
  color: #fff;
}
.contact-links a:hover {
  text-decoration: underline;
  color: whitesmoke;
}
section .section-title {
  text-align: center;
  background: #0277bd;
  margin-bottom: 50px;
  text-transform: uppercase;
}
#footer {
  background: #0277bd;
}
#footer h5 {
  padding-bottom: 6px;
  margin-bottom: 20px;
  color: #ffffff;
}
#footer a {
  color: #ffffff;
  text-decoration: none !important;
  background-color: transparent;
  -webkit-text-decoration-skip: objects;
}
#footer ul.social li {
  padding: 3px 0;
}
#footer ul.social li a i {
  margin-right: 5px;
  font-size: 2rem;
  -webkit-transition: 0.5s all ease;
  -moz-transition: 0.5s all ease;
  transition: 0.5s all ease;
}
#footer ul.social li:hover a i {
  font-size: 2.3rem;
  margin-top: -10px;
}
#footer ul.social li a,
#footer ul.quick-links li a {
  color: #ffffff;
}
#footer ul.social li a:hover {
  color: #eeeeee;
}
#footer ul.quick-links li {
  padding: 3px 0;
  -webkit-transition: 0.5s all ease;
  -moz-transition: 0.5s all ease;
  transition: 0.5s all ease;
}
#footer ul.quick-links li:hover {
  padding: 3px 0;
  margin-left: 5px;
  font-weight: 700;
}
#footer ul.quick-links li a i {
  margin-right: 5px;
}
#footer ul.quick-links li:hover a i {
  font-weight: 700;
}
.back-to-top {
  cursor: pointer;
  position: fixed;
  bottom: 20px;
  right: 20px;
  display: none;
}

@media (max-width: 767px) {
  #footer h5 {
    padding-left: 0;
    border-left: transparent;
    padding-bottom: 0px;
    margin-bottom: 10px;
  }
}
@media screen and (max-width: 800px) {
  footer {
    height: 525px;
  }
  .social-links {
    line-height: 3;
    font-size: 3rem;
  }
  .footer-contact {
    color: #fff;
  }
  .grapevine-container {
    width: 100%;
    margin: auto;
  }
  .stack-img {
    width: 100%;
  }

  .grapevine-container {
    width: 100%;
    margin: auto;
  }
  .mobile-menu-button {
    display: block;
    float: right;
    color: #fff;
    margin-right: 30px;
    line-height: 3;
    font-size: 1.5rem;
  }
  .mobile-menu-button a {
    text-decoration: none;
    color: #fff;
  }
}