Bugged checkout page

As you can see the check out page has a bug on the interface

My store https://thegroovecartel.com/music-store/

### WordPress Environment ###

Home URL: https://thegroovecartel.com
Site URL: https://thegroovecartel.com
WC Version: 2.6.7
Log Directory Writable: ?
WP Version: 4.6.1
WP Multisite: –
WP Memory Limit: 512 MB
WP Debug Mode: –
WP Cron: ?
Language: en_US

### Server Environment ###

Server Info: Apache Phusion_Passenger/4.0.10 mod_bwlimited/1.4 mod_fcgid/2.3.9
PHP Version: 5.6.25
PHP Post Max Size: 32 MB
PHP Time Limit: 180
PHP Max Input Vars: 1000
cURL Version: 7.36.0
OpenSSL/1.0.1e

SUHOSIN Installed: –
MySQL Version: 5.6.27
Max Upload Size: 32 MB
Default Timezone is UTC: ?
fsockopen/cURL: ?
SoapClient: ?
DOMDocument: ?
GZip: ?
Multibyte String: ?
Remote Post: ?
Remote Get: ?

### Database ###

WC Database Version: 2.6.7
: 
woocommerce_sessions: ?
woocommerce_api_keys: ?
woocommerce_attribute_taxonomies: ?
woocommerce_downloadable_product_permissions: ?
woocommerce_order_items: ?
woocommerce_order_itemmeta: ?
woocommerce_tax_rates: ?
woocommerce_tax_rate_locations: ?
woocommerce_shipping_zones: ?
woocommerce_shipping_zone_locations: ?
woocommerce_shipping_zone_methods: ?
woocommerce_payment_tokens: ?
woocommerce_payment_tokenmeta: ?
MaxMind GeoIP Database: ?

### Active Plugins (42) ###

Adblock Notify Lite: by Themeisle – 2.0.3
Add Categories to Pages.: by a.ankit – 1.0
AdFly Integration: by AdFly – 1.0.2
Akismet: by Automattic – 3.2
Alpine PhotoTile for Instagram: by the Alpine Press – 1.2.7.7
Contact Form 7 - PayPal Add-on: by Scott Paterson – 1.3.4
Contact Form 7: by Takayuki Miyoshi – 4.5.1
15Zine - Functionality: by  – 2.2
Custom Facebook Feed: by Smash Balloon – 2.4.5
Duplicator: by LifeInTheGrid – 1.1.18
Easy Twitter Feed Widget: by DesignOrbital.com – 0.5
Yottie: by Elfsight – 1.3.0
Email to Download: by duogeek – 3.0.4
Envato WordPress Toolkit: by Envato – 1.7.3
Facebook Likebox Widget & Shortcode: by A WP Life – 0.3.2
Font Awesome Shortcodes: by M. W. Delaney – 4.2
Google AdSense: by Google – 1.2.1
Indeed My Team: by indeed – 2.6
Insert Headers and Footers: by WPBeginner – 1.3.3
Instagram Feed: by Smash Balloon – 1.4.8
Jetpack by WordPress.com: by Automattic – 4.3.2
WPBakery Visual Composer: by Michael M - WPBakery.com – 4.12.1
Justified Image Grid: by Firsh – 3.2
Login With Ajax: by Marcus Sykes – 3.1.6
MailChimp Forms by MailMunch: by MailMunch – 2.1.6
MailChimp: by MailChimp – 1.5.2
Milestone: by Andrew Ferguson – 1.0
Mixcloud Embed: by Domenico Biancardi – 2.2.0
Newsletter: by Stefano Lissa & The Newsletter Team – 4.6.8
PushCrew: by Wingify Software Pvt Ltd – 1.1
Quoty: by TNT Studio – 1.1.4
Simple Adblock Notice: by Shrinivas Naik – 2.3.4
Social Count Plus: by Claudio Sanches – 3.3.5
SoundCloud Shortcode: by SoundCloud Inc. – 3.0.2
Spotify Master: by TechGasp – 5.0
Twitter Auto Publish: by xyzscripts.com – 1.3.1
Ultimate Social: by WPSmarter – 6.0.1b1
Digital Goods Checkout for WooCommerce: by WebSmacker – 1.3
WooCommerce: by WooThemes – 2.6.7
Yoast SEO: by Team Yoast – 3.7.1
WP Maintenance Mode: by Designmodo – 2.0.8
WP Super Cache: by Automattic – 1.4.8

### Settings ###

Force SSL: –
Currency: USD ($)
Currency Position: left
Thousand Separator: ,
Decimal Separator: .
Number of Decimals: 2

### API ###

API Enabled: ?

### WC Pages ###

Shop Base: #1322 - /music-store/
Cart: #333 - /cart/
Checkout: #337 - /checkout/
My Account: #345 - /my-account/

### Taxonomies ###

Product Types: external (external)
grouped (grouped)
simple (simple)
variable (variable)

### Theme ###

Name: 15zine
Version: 2.2.3
Author URL: https://themeforest.net/user/cubell
Child Theme: ? – If you're modifying WooCommerce on a parent theme you didn't build personally
then we recommend using a child theme. See: How to create a child theme

WooCommerce Support: ?

### Templates ###

Overrides: Your theme has a woocommerce.php file
you will not be able to override the woocommerce/archive-product.php custom template since woocommerce.php has priority over archive-product.php. This is intended to prevent display issues.

Overrides: 15zine/woocommerce/content-product.php
15zine/woocommerce/single-product/meta.php
15zine/woocommerce/single-product/rating.php
15zine/woocommerce/single-product/tabs/tabs.php
15zine/woocommerce/single-product/title.php