Odd Looking shape/icon under search on mobile

There is an odd Looking shape/icon under search on the mobile version of this site https://www.tryhypnosisnow.com . Here is what it looks like https://postimg.cc/xNC7NQkR. Right above the mouse arrow amnd right below the search icon. I included the site CSS below.

#mobile-header img { width: 100%; height: auto; }
h1.entry-title {
display: none;
}
@media (max-width: 768px) {
    .page-hero {
        background-image: url(https://www.tryhypnosisnow.com/wp-content/uploads/2020/04/Hypnosis-NYC-for-quit-smoking-weight-loss-anxiety-phobias-confidence.jpeg);
    }
}
@media (min-width: 769px) {
    .main-navigation li.search-item {
        display: none !important;
    }
}
#mobile-header .inside-navigation {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
}
.main-navigation .mobile-bar-items {
    order: 4;
}
input.ticket-selector-submit-btn {
background-color: #001de0!important; color: #fffff;
}
@media(max-width: 1024px) {
    .page-hero {
        display: none;
    }
}
@media(max-width: 768px) {
    .wp-block-image.small-image img {
        max-width: 150px;
    }
    .wp-block-image.small-image figure {
         text-align: center;
    }
}
@media (max-width: 531px) {
  #mobile-header {
      min-height: 154px;
  }
  .site-logo.mobile-header-logo {
    min-height: 93px;
    width: 100%;
  }
}
@media(max-width: 500px) {
  .wp-block-image .alignleft,
  .wp-block-image .alignleft img {
    float: none;
    width: 100%
  }
}