so, I'm fine in-regards to the lesson. My question is more of... 'what did I do to the arrow'..?

Question

My code is accurate with some touches for most of the lesson.. I just noticed at the end that the arrow is wonky. It's taller on the left side of the image. 
here is my code from the lesson:
/* Web Fonts -------------------- */
@font-face {
  font-family: 'Abolition Regular';
  src: url('../fonts/abolition-regular-webfont.eot');
  src: url('../fonts/abolition-regular-webfont.eot?#iefix') format('embedded-opentype'),
       url('../fonts/abolition-regular-webfont.woff') format('woff'),
       url('../fonts/abolition-regular-webfont.ttf') format('truetype');
}
/* Base Styles -------------------- */
{
box-sizing: border-box;
}
body {
  color: #878787;
  margin: 0;
  font: 1em/1.5 "Helvetica Neue", Helvetica, Arial, sans-serif;
}
h1,
h2 {
  font-family: 'Abolition Regular', "Helvetica Neue", Helvetica, Arial, sans-serif;
}
h1 {  
  font-size: 5.625rem; /* 90px/16px  */
  color: rgba(255, 255, 255, 1);
  text-transform: uppercase;
  font-weight: normal;
  line-height: 1.3;
  text-shadow: 0 1px 0 #ccc,
               0 2px 0 #c9c9c9,
               0 3px 0 #bbb,
               0 4px 0 #b9b9b9,
               0 5px 0 #aaa,
               0 6px 1px rgba(0,0,0,.1),
               0 0 5px rgba(0,0,0,.1),
               0 1px 3px rgba(0,0,0,.3),
               0 3px 5px rgba(0,0,0,.2),
               0 5px 10px rgba(0,0,0,.25),
               0 10px 10px rgba(0,0,0,.2),
               0 20px 20px rgba(0,0,0,.15);;
  margin: 12px 0 0;
}
h2 {
  font-size: 3.3125em; /* 53px/16px  /
  font-weight: normal;
  line-height: 1.1;
  margin: 0 0 .5em; / 0 0 26px */
}
h3 {
  font-size: 1.25em; /* 20px/16px  /
  color: #48525c;
  line-height: 1.2;
  margin-bottom: 1.7em; / 34px */
}
img {
  max-width: 100%;
  margin-bottom: 20px;
  border-radius: 10px 50px;
}
ul,
ol {
  margin: 30px 0;
}
li {
  margin-bottom: 10px;
}
/* Pseudo-classes ------------------ */
a:link {
  color: rgb(255, 169, 73);
  text-decoration: none;
}
a:visited {
  color: lightblue;
}
a:hover {
  color: rgba(255, 169, 73, .4);
}
a:active {
  color: lightcoral;
}
/* Main Styles --------------------- */
.main-header {
  padding-top: 170px;
  height: 850px;
  background: radial-gradient(circle at top, yellow .5%, #ffa949 3%, firebrick 5%, black 9%, transparent 70%),
              linear-gradient(0deg, #fff, transparent),
              #ffa949 url('../img/mountains.jpg') no-repeat center;
  background-size: cover;
}
.title {
  color: white;
  font-size: 1.625rem; /* 26px/16px */
  letter-spacing: .065em;
  font-weight: 200;
  border-bottom: 2px solid;
  padding-bottom: 10px;
}
.intro {
  font-size: 1.25em; /* 20px/16px */
  line-height: 1.6;  
}
.primary-content,
.main-header,
.main-footer {
  text-align: center;
}
.primary-content {
    padding-top: 25px;
  padding-bottom: 95px;
}
.secondary-content {
    padding-top: 80px;
    padding-bottom: 70px;
  border-bottom: 2px solid #dfe2e6;
}
.callout {
  font-size: 1.25em;
  border-bottom: 3px solid;
  padding: 0 9px 3px;
  margin-top: 20px;
  display: inline-block;
}
.main-footer {
  padding-top: 60px;
  padding-bottom: 60px;
  border-bottom: 10px solid #ffa949;
}
.t-border {
  border-top: 2px solid #dfe2e6;
}
/* Layout Styles ------------------ */
.primary-content, 
.secondary-content {
  width: 75%;
  padding-left: 50px;
  padding-right: 50px;
  margin: auto;
  max-width: 960px;
}
.wildlife {
  color: white;
  text-align: left;
  padding: 18% 24%;
  border-top: 10px solid #ffa949;
  margin: 105px 0 60px;
  background: #434a52 url('../img/bear.jpg') no-repeat center;
  background-size: cover;
  box-shadow: inset 0 0 50px 10px rgba(0,0,0, 1);
  border-radius: 50px 10px;
}
.arrow {
  width: 30px;
  margin-top: 150px;
}
/* Floated Columns ------------------ */
.resorts,
.tips {
  width: 46.5%;
}
.tips {
  float: left;
}
.resorts {
  float: right;
}
/* Float Clearfix ------------------ */
.group:after {
  content: "";
  display: table;
  clear: both;
}

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Alexander Mann

Alexander Mann

so, I'm fine in-regards to the lesson. My question is more of... 'what did I do to the arrow'..?