Small line appearing when using diagonal settings on color element

We copied this code from one of the demos and put it on our page. See the small line under the diagonal?

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[av_heading heading='Nutrition Services ' tag='h1' link_apply='' link='manually,http://' link_target='' style='blockquote modern-quote modern-centered' size='40' subheading_active='' subheading_size='15' margin='5px,,,' padding='0' color='custom-color-heading' custom_font='#ffffff' custom_class='' admin_preview_bg='' av-desktop-hide='' av-medium-hide='' av-small-hide='' av-mini-hide='' av-medium-font-size-title='' av-small-font-size-title='' av-mini-font-size-title='' av-medium-font-size='' av-small-font-size='' av-mini-font-size='' av_uid='av-b36yo'][/av_heading]
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<p style=”text-align: center;”> Individual nutrition counseling</p>
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[av_heading heading='We provide nutrition therapy for:' tag='h1' link_apply='' link='manually,http://' link_target='' style='blockquote modern-quote' size='40' subheading_active='' subheading_size='15' margin='5px,,,' padding='9' color='custom-color-heading' custom_font='#ffffff' av-medium-font-size-title='' av-small-font-size-title='' av-mini-font-size-title='' av-medium-font-size='' av-small-font-size='' av-mini-font-size='' av_uid='av-jqx1mtta' admin_preview_bg=''][/av_heading]

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• <span style=”font-size: 14pt;”>Eating disorders including anorexia nervosa, bulimia nervosa, binge eating disorder, avoidant restrictive food intake disorder, other specified eating disorders, night eating syndrome, and pica</span>
• <span style=”font-size: 14pt;”>Disordered eating caused by addiction, chronic dieting and psychological conditions</span>
• <span style=”font-size: 14pt;”>Weight and body image concerns</span>
• <span style=”font-size: 14pt;”>Nutrition related health conditions including digestive disorders, Polycystic Ovary Syndrome, diabetes, hyperlipidemia, hypertension, cardiovascular disease, metabolic syndrome, food allergies</span>
• <span style=”font-size: 14pt;”>General wellness</span>

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Conditions served: Eating disorder recovery, addiction recovery, disordered eating and body image concerns, general nutrition and well being, medical nutrition therapy including PCOS, diabetes, hypertension, hypercholesterolemia, IBS, celiac disease, and other nutrition related health conditions.

Conditions served: Eating disorder recovery, addiction recovery, disordered eating and body image concerns, general nutrition and well being, medical nutrition therapy including PCOS, diabetes, hypertension, hypercholesterolemia, IBS, celiac disease, and other nutrition related health conditions.

Conditions served: Eating disorder recovery, addiction recovery, disordered eating and body image concerns, general nutrition and well being, medical nutrition therapy including PCOS, diabetes, hypertension, hypercholesterolemia, IBS, celiac disease, and other nutrition related health conditions.
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