:root {
  --bs-gray: #727272;
  --bs-blue: #6293eb;
  --bs-darker-blue: #323e54;
  --bs-light-blue: #d5e4f5;
  --bs-cyan: #1e90b3;

  --bs-primary: var(--bs-darker-blue);
  --bs-secondary: var(--bs-white);
  --bs-secondary-color: var(--bs-primary);
}

* {
  font-family: "Lato", sans-serif;
}

h1, h2 {
  margin-top: 2.5rem;
  margin-bottom: 1rem;
  font-weight: bold;
}

h3 {
  margin-top: 1rem;
  margin-bottom: 1rem;
}

h5 {
  font-weight: bold;
}


a {
  color: var(--bs-cyan);
  text-decoration: none;
}

a:hover,
a:focus {
  color: var(--bs-cyan);
  text-decoration: underline;
}

img {
  display: block;
  height: auto;
  max-width: 100%;
}

.my-content>* {
  max-width: 1320px;
  margin-left: auto;
  margin-right: auto;
}

.my-content>h1,
.my-content>h2,
.my-content>h3,
.my-content>h4,
.my-content>p,
.my-content>a {
  padding-left: 1rem;
  padding-right: 1rem;
}

.my-content>ul {
  padding-left: 2rem;
}

.my-center-section {
  overflow: auto;
  text-align: center;
}

.my-bg-secondary {
  background-color: var(--bs-light-blue);
  max-width: unset;
}

.my-bg-secondary h2 + p {
  color: var(--bs-gray);
}

.my-color-secondary {
  color: var(--bs-gray);
}

.navbar {
  padding: .8rem 0;
  background: var(--bs-white);
}

.nav-item {
  font-weight: bold;
  margin-left: 7.5px;
  margin-right: 7.5px;
  text-align: center;
}

.nav-item:last-child .nav-link {
  padding-right: 0;
}

.dropdown-menu {
  --bs-dropdown-link-active-bg: var(--bs-cyan);
}

.btn {
  --bs-btn-padding-x: 0.8rem;
  --bs-btn-padding-y: 0.7rem;
  --bs-btn-font-weight: bold;
  --bs-btn-border-color: var(--bs-primary);
  --bs-btn-border-width: 2px;
}

a.btn:focus {
  text-decoration: underline;
}

.btn-primary {
  --bs-btn-bg: var(--bs-primary);
  --bs-btn-hover-bg: var(--bs-white);
  --bs-btn-hover-color: var(--bs-primary);
  --bs-btn-hover-border-color: var(--bs-primary);
  --bs-btn-active-bg: var(--bs-white);
  --bs-btn-active-color: var(--bs-primary);
  --bs-btn-active-border-color: var(--bs-primary);
}

.btn-outline-primary {
  --bs-btn-bg: var(--bs-white);
  --bs-btn-color: var(--bs-primary);
  --bs-btn-hover-bg: var(--bs-white);
  --bs-btn-hover-color: var(--bs-primary);
  --bs-btn-hover-border-color: var(--bs-primary);
  --bs-btn-active-bg: var(--bs-white);
  --bs-btn-active-color: var(--bs-primary);
  --bs-btn-active-border-color: var(--bs-primary);
}

.banner {
  width: 100%;
  max-width: 1320px;
  margin: 2rem auto;
  padding: 1rem;
  border-radius: 0.375rem;
  background: var(--bs-light-blue);
  text-align: center;
}

.banner p {
  margin: 0;
  font-weight: bold;
}

.alert {
  width: calc(100% - 2rem);
}

.organizations {
  margin-bottom: 1.5rem;
}

.organizations a img {
  max-width: 250px;
  max-height: 100px;
  margin: 0.6rem 20px;
}

.education-carousel {
  max-width: 1200px;
  margin: auto;
}

.education-carousel .card {
  height: 15rem;
  min-height: 230px;
  margin: 1rem 2rem;
  padding: 20px;
  border: var(--bs-primary) 2px solid;
}

.education-carousel .card-body {
  height: 100%;
  display: flex;
  flex-direction: column;
  justify-content: space-around;
}

.education-carousel .card-title, .card-link {
  font-weight: bold;
}

.education-carousel .card-text {
  color: var(--bs-gray);
}

.features .card {
  padding: 1rem;
  background-color: unset;
  border: none;
  text-align: left;
}

.features .card-img-top {
  width: auto;
  height: 125px;
  margin: auto;
}

.img-center {
  margin: 0 auto;
}
  
.img-polaroid {
  border-radius: 0.375rem;
  -webkit-box-shadow: 4px 4px 3px rgba(0, 0, 0, 0.5);
     -moz-box-shadow: 4px 4px 3px rgba(0, 0, 0, 0.5);
          box-shadow: 4px 4px 3px rgba(0, 0, 0, 0.5);
  height: 200px;
}

.text-image-split img {
  max-width: 600px;
}

.text-image-split .text {
  max-width: 500px;
}

.text-image-split .text {
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.notebook-list-item {
  border-color: var(--bs-gray);
  text-align: left;
}

.notebook-list-item .lecture-link {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  color: black;
}

.notebook-list-item p {
  margin: 0;
}

.notebook-list-item .angle {
  font-size: 2rem;
}

.btn-show-more {
  color: black;
  font-weight: bold;
  background: none;
  border: none;
  border-radius: 0;
  border-bottom: 1px solid black;
}

.lecture-list {
  max-width: 991.98px;
  margin: auto;
}

.post-links>ul {
  list-style-type: none;
  padding-left: 0;
}

.post-links>ul>li {
  margin-bottom: 15px;
}

.sponsor {
  margin-top: 2.5rem;
  margin-bottom: 2.5rem;
}

.sponsor img {
  max-width: 300px;
  width: 70%;
}

.footer {
  margin: 2rem 10px;
  border-top: 1px solid var(--bs-light-blue);
  padding-top: 30px;
}

.footer-list {
  list-style: none;
}

.footer-list li {
  margin-bottom: 1.5rem;
}

.footer-list a {
  color: var(--bs-black);
}

.footer-list li:first-child {
  font-weight: bold;
}