Why these CSS rules are not applied - css

Question

I was trying to make this parallax-website. In the CSS I am defining properties for .image1 . So I wrote down properties and then just below it I again wrote some properties for the same class .image1. But only the ~ opacity, position (from 1st) and other properties defined (from 2 time) were applied. I checked the it using Inspect Element and all other properties were cut down. I am not able to understand why this is happening. Please help me.
* {
margin: 0;
padding: 0;
box-sizing: border-box;
}
html,
body {
height: 100%;
font-family: 'Lato', sans-serif;
font-weight: 400;
line-height: 1.8em;
color: #666;
}
.image1 {
position: relative;
background-size: cover;
background-position: center;
background-repeat: no-repeat;
background-attachment: fixed;
opacity: 0.70;
}
.image1 {
background: url('https://jolly-kalam-23776e.netlify.app/parallaxsite/img/image1.jpg');
min-height: 100%;
}
.text-box-image1 {
position: absolute;
/* To bring that box in center */
top: 50%;
left: 50%;
transform: translate(-50%, -50%);
}
.text-image1 {
font-size: 27px;
letter-spacing: 8px;
color: white;
background-color: #111;
padding: 20px;
}
.section-one {
padding: 50px 80px;
}
.section-one .heading {
text-align: center;
letter-spacing: 1px;
margin: 20px;
}
p {
text-align: center;
font-size: 17px;
}
<div class="image1">
<div class="text-box-image1">
<span class="text-image1">PARALLAX WEBSITE</span>
</div>
</div>

Answer 1

I think you need to mention background image as "background-image". You are declaring background property individually. or you can write like that way :
* {
margin: 0;
padding: 0;
box-sizing: border-box;
}
html,
body {
height: 100%;
font-family: 'Lato', sans-serif;
font-weight: 400;
line-height: 1.8em;
color: #666;
}
.image1 {
background: url('https://jolly-kalam-23776e.netlify.app/parallaxsite/img/image1.jpg') no-repeat fixed center center;
background-size: cover;
min-height: 100%;
opacity: 0.70;
position: relative;
}
.text-box-image1 {
position: absolute;
/* To bring that box in center */
top: 50%;
left: 50%;
transform: translate(-50%, -50%);
}
.text-image1 {
font-size: 27px;
letter-spacing: 8px;
color: white;
background-color: #111;
padding: 20px;
}
.section-one {
padding: 50px 80px;
}
.section-one .heading {
text-align: center;
letter-spacing: 1px;
margin: 20px;
}
p {
text-align: center;
font-size: 17px;
}
<div class="image1">
<div class="text-box-image1">
<span class="text-image1">PARALLAX WEBSITE</span>
</div>
</div>